Home / 113,129.38-156,109.44-65,385.82

Finding the Fourth Proportional to 113,129.38, 156,109.44 and 65,385.82

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Solution

The fourth proportional to 113,129.38, 156,109.44 and 65,385.82 is: 90,227.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,129.38 : 156,109.44 = 65,385.82 : x
  2. Step 2: Convert to fraction form
    113,129.38/156,109.44 = 65,385.82/x
  3. Step 3: Cross multiply
    113,129.38x = 156,109.44 × 65,385.82
  4. Step 4: Simplify right side
    113,129.38x = 10,207,343,744.14
  5. Step 5: Solve for x
    x = 10,207,343,744.14/113,129.38
  6. Step 6: Final answer
    x = 90,227.17

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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.