Home / 138,298,335.64-190,851,640.12-76,418,132.92

Finding the Fourth Proportional to 138,298,335.64, 190,851,640.12 and 76,418,132.92

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Solution

The fourth proportional to 138,298,335.64, 190,851,640.12 and 76,418,132.92 is: 105,456,988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,298,335.64 : 190,851,640.12 = 76,418,132.92 : x
  2. Step 2: Convert to fraction form
    138,298,335.64/190,851,640.12 = 76,418,132.92/x
  3. Step 3: Cross multiply
    138,298,335.64x = 190,851,640.12 × 76,418,132.92
  4. Step 4: Simplify right side
    138,298,335.64x = 14,584,526,002,690,166
  5. Step 5: Solve for x
    x = 14,584,526,002,690,166/138,298,335.64
  6. Step 6: Final answer
    x = 105,456,988.58

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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.