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Finding the Fourth Proportional to 172,227.55, 258,252.79 and 77,376.45

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Solution

The fourth proportional to 172,227.55, 258,252.79 and 77,376.45 is: 116,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,227.55 : 258,252.79 = 77,376.45 : x
  2. Step 2: Convert to fraction form
    172,227.55/258,252.79 = 77,376.45/x
  3. Step 3: Cross multiply
    172,227.55x = 258,252.79 × 77,376.45
  4. Step 4: Simplify right side
    172,227.55x = 19,982,684,092.80
  5. Step 5: Solve for x
    x = 19,982,684,092.80/172,227.55
  6. Step 6: Final answer
    x = 116,024.90

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1.5x scale

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.