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Finding the Fourth Proportional to 177,870.30, 266,805.45 and 72,764.70

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Solution

The fourth proportional to 177,870.30, 266,805.45 and 72,764.70 is: 109,147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,870.30 : 266,805.45 = 72,764.70 : x
  2. Step 2: Convert to fraction form
    177,870.30/266,805.45 = 72,764.70/x
  3. Step 3: Cross multiply
    177,870.30x = 266,805.45 × 72,764.70
  4. Step 4: Simplify right side
    177,870.30x = 19,414,018,527.62
  5. Step 5: Solve for x
    x = 19,414,018,527.62/177,870.30
  6. Step 6: Final answer
    x = 109,147.05

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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.