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Finding the Fourth Proportional to 118,949.31, 178,367.47 and 69,044.70

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Solution

The fourth proportional to 118,949.31, 178,367.47 and 69,044.70 is: 103,534.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,949.31 : 178,367.47 = 69,044.70 : x
  2. Step 2: Convert to fraction form
    118,949.31/178,367.47 = 69,044.70/x
  3. Step 3: Cross multiply
    118,949.31x = 178,367.47 × 69,044.70
  4. Step 4: Simplify right side
    118,949.31x = 12,315,328,952.18
  5. Step 5: Solve for x
    x = 12,315,328,952.18/118,949.31
  6. Step 6: Final answer
    x = 103,534.26

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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.