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Finding the Fourth Proportional to 177,340.60, 266,010.90 and 72,105.40

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Solution

The fourth proportional to 177,340.60, 266,010.90 and 72,105.40 is: 108,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,340.60 : 266,010.90 = 72,105.40 : x
  2. Step 2: Convert to fraction form
    177,340.60/266,010.90 = 72,105.40/x
  3. Step 3: Cross multiply
    177,340.60x = 266,010.90 × 72,105.40
  4. Step 4: Simplify right side
    177,340.60x = 19,180,822,348.86
  5. Step 5: Solve for x
    x = 19,180,822,348.86/177,340.60
  6. Step 6: Final answer
    x = 108,158.10

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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.