Home / 128,473,262,371.53-177,297,886,824.75-77,040,196,015.28

Finding the Fourth Proportional to 128,473,262,371.53, 177,297,886,824.75 and 77,040,196,015.28

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Solution

The fourth proportional to 128,473,262,371.53, 177,297,886,824.75 and 77,040,196,015.28 is: 106,318,339,722.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,473,262,371.53 : 177,297,886,824.75 = 77,040,196,015.28 : x
  2. Step 2: Convert to fraction form
    128,473,262,371.53/177,297,886,824.75 = 77,040,196,015.28/x
  3. Step 3: Cross multiply
    128,473,262,371.53x = 177,297,886,824.75 × 77,040,196,015.28
  4. Step 4: Simplify right side
    128,473,262,371.53x = 13,659,063,954,072,781,455,360
  5. Step 5: Solve for x
    x = 13,659,063,954,072,781,455,360/128,473,262,371.53
  6. Step 6: Final answer
    x = 106,318,339,722.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.