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Finding the Fourth Proportional to 117,332.64, 161,920.20 and 63,617.52

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Solution

The fourth proportional to 117,332.64, 161,920.20 and 63,617.52 is: 87,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,332.64 : 161,920.20 = 63,617.52 : x
  2. Step 2: Convert to fraction form
    117,332.64/161,920.20 = 63,617.52/x
  3. Step 3: Cross multiply
    117,332.64x = 161,920.20 × 63,617.52
  4. Step 4: Simplify right side
    117,332.64x = 10,300,961,561.90
  5. Step 5: Solve for x
    x = 10,300,961,561.90/117,332.64
  6. Step 6: Final answer
    x = 87,792.80

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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.