Home / 138,640,966.52-191,330,512.43-76,761,304.88

Finding the Fourth Proportional to 138,640,966.52, 191,330,512.43 and 76,761,304.88

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Solution

The fourth proportional to 138,640,966.52, 191,330,512.43 and 76,761,304.88 is: 105,933,910.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,640,966.52 : 191,330,512.43 = 76,761,304.88 : x
  2. Step 2: Convert to fraction form
    138,640,966.52/191,330,512.43 = 76,761,304.88/x
  3. Step 3: Cross multiply
    138,640,966.52x = 191,330,512.43 × 76,761,304.88
  4. Step 4: Simplify right side
    138,640,966.52x = 14,686,779,796,145,402
  5. Step 5: Solve for x
    x = 14,686,779,796,145,402/138,640,966.52
  6. Step 6: Final answer
    x = 105,933,910.92

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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.