Home / 138,124,839.64-190,616,790.12-75,404,281.90

Finding the Fourth Proportional to 138,124,839.64, 190,616,790.12 and 75,404,281.90

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Solution

The fourth proportional to 138,124,839.64, 190,616,790.12 and 75,404,281.90 is: 104,060,371.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,124,839.64 : 190,616,790.12 = 75,404,281.90 : x
  2. Step 2: Convert to fraction form
    138,124,839.64/190,616,790.12 = 75,404,281.90/x
  3. Step 3: Cross multiply
    138,124,839.64x = 190,616,790.12 × 75,404,281.90
  4. Step 4: Simplify right side
    138,124,839.64x = 14,373,322,177,081,616
  5. Step 5: Solve for x
    x = 14,373,322,177,081,616/138,124,839.64
  6. Step 6: Final answer
    x = 104,060,371.87

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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.