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Finding the Fourth Proportional to 117,332.32, 161,917.10 and 63,617.17

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Solution

The fourth proportional to 117,332.32, 161,917.10 and 63,617.17 is: 87,790.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,332.32 : 161,917.10 = 63,617.17 : x
  2. Step 2: Convert to fraction form
    117,332.32/161,917.10 = 63,617.17/x
  3. Step 3: Cross multiply
    117,332.32x = 161,917.10 × 63,617.17
  4. Step 4: Simplify right side
    117,332.32x = 10,300,707,358.52
  5. Step 5: Solve for x
    x = 10,300,707,358.52/117,332.32
  6. Step 6: Final answer
    x = 87,790.88

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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.