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Finding the Fourth Proportional to 118,663.31, 178,117.98 and 79,494.14

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Solution

The fourth proportional to 118,663.31, 178,117.98 and 79,494.14 is: 119,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,663.31 : 178,117.98 = 79,494.14 : x
  2. Step 2: Convert to fraction form
    118,663.31/178,117.98 = 79,494.14/x
  3. Step 3: Cross multiply
    118,663.31x = 178,117.98 × 79,494.14
  4. Step 4: Simplify right side
    118,663.31x = 14,159,335,638.64
  5. Step 5: Solve for x
    x = 14,159,335,638.64/118,663.31
  6. Step 6: Final answer
    x = 119,323.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.