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Finding the Fourth Proportional to 118,345.65, 163,318.10 and 67,355.88

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Solution

The fourth proportional to 118,345.65, 163,318.10 and 67,355.88 is: 92,951.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,345.65 : 163,318.10 = 67,355.88 : x
  2. Step 2: Convert to fraction form
    118,345.65/163,318.10 = 67,355.88/x
  3. Step 3: Cross multiply
    118,345.65x = 163,318.10 × 67,355.88
  4. Step 4: Simplify right side
    118,345.65x = 11,000,434,345.43
  5. Step 5: Solve for x
    x = 11,000,434,345.43/118,345.65
  6. Step 6: Final answer
    x = 92,951.74

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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.