Home / 128,303,999.70-192,455,999.55-70,908,371.70

Finding the Fourth Proportional to 128,303,999.70, 192,455,999.55 and 70,908,371.70

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Solution

The fourth proportional to 128,303,999.70, 192,455,999.55 and 70,908,371.70 is: 106,362,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,303,999.70 : 192,455,999.55 = 70,908,371.70 : x
  2. Step 2: Convert to fraction form
    128,303,999.70/192,455,999.55 = 70,908,371.70/x
  3. Step 3: Cross multiply
    128,303,999.70x = 192,455,999.55 × 70,908,371.70
  4. Step 4: Simplify right side
    128,303,999.70x = 13,646,741,551,986,434
  5. Step 5: Solve for x
    x = 13,646,741,551,986,434/128,303,999.70
  6. Step 6: Final answer
    x = 106,362,557.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.