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Finding the Fourth Proportional to 118,759.91, 163,882.85 and 65,045.16

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Solution

The fourth proportional to 118,759.91, 163,882.85 and 65,045.16 is: 89,759.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,759.91 : 163,882.85 = 65,045.16 : x
  2. Step 2: Convert to fraction form
    118,759.91/163,882.85 = 65,045.16/x
  3. Step 3: Cross multiply
    118,759.91x = 163,882.85 × 65,045.16
  4. Step 4: Simplify right side
    118,759.91x = 10,659,785,874.28
  5. Step 5: Solve for x
    x = 10,659,785,874.28/118,759.91
  6. Step 6: Final answer
    x = 89,759.13

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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.