Home / 113,620.45-156,805.17-62,642.20

Finding the Fourth Proportional to 113,620.45, 156,805.17 and 62,642.20

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Solution

The fourth proportional to 113,620.45, 156,805.17 and 62,642.20 is: 86,451.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,620.45 : 156,805.17 = 62,642.20 : x
  2. Step 2: Convert to fraction form
    113,620.45/156,805.17 = 62,642.20/x
  3. Step 3: Cross multiply
    113,620.45x = 156,805.17 × 62,642.20
  4. Step 4: Simplify right side
    113,620.45x = 9,822,620,036.15
  5. Step 5: Solve for x
    x = 9,822,620,036.15/113,620.45
  6. Step 6: Final answer
    x = 86,451.17

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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.