Home / 120,010.74-165,591.81-72,267.18

Finding the Fourth Proportional to 120,010.74, 165,591.81 and 72,267.18

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Solution

The fourth proportional to 120,010.74, 165,591.81 and 72,267.18 is: 99,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,010.74 : 165,591.81 = 72,267.18 : x
  2. Step 2: Convert to fraction form
    120,010.74/165,591.81 = 72,267.18/x
  3. Step 3: Cross multiply
    120,010.74x = 165,591.81 × 72,267.18
  4. Step 4: Simplify right side
    120,010.74x = 11,966,853,139.80
  5. Step 5: Solve for x
    x = 11,966,853,139.80/120,010.74
  6. Step 6: Final answer
    x = 99,714.85

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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.