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Finding the Fourth Proportional to 177,376.60, 266,064.90 and 72,141.40

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Solution

The fourth proportional to 177,376.60, 266,064.90 and 72,141.40 is: 108,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,376.60 : 266,064.90 = 72,141.40 : x
  2. Step 2: Convert to fraction form
    177,376.60/266,064.90 = 72,141.40/x
  3. Step 3: Cross multiply
    177,376.60x = 266,064.90 × 72,141.40
  4. Step 4: Simplify right side
    177,376.60x = 19,194,294,376.86
  5. Step 5: Solve for x
    x = 19,194,294,376.86/177,376.60
  6. Step 6: Final answer
    x = 108,212.10

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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.