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Finding the Fourth Proportional to 177,681.70, 266,522.55 and 72,443.30

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Solution

The fourth proportional to 177,681.70, 266,522.55 and 72,443.30 is: 108,664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,681.70 : 266,522.55 = 72,443.30 : x
  2. Step 2: Convert to fraction form
    177,681.70/266,522.55 = 72,443.30/x
  3. Step 3: Cross multiply
    177,681.70x = 266,522.55 × 72,443.30
  4. Step 4: Simplify right side
    177,681.70x = 19,307,773,046.42
  5. Step 5: Solve for x
    x = 19,307,773,046.42/177,681.70
  6. Step 6: Final answer
    x = 108,664.95

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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.