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Finding the Fourth Proportional to 172,329.67, 258,444.28 and 67,123.63

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Solution

The fourth proportional to 172,329.67, 258,444.28 and 67,123.63 is: 100,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,329.67 : 258,444.28 = 67,123.63 : x
  2. Step 2: Convert to fraction form
    172,329.67/258,444.28 = 67,123.63/x
  3. Step 3: Cross multiply
    172,329.67x = 258,444.28 × 67,123.63
  4. Step 4: Simplify right side
    172,329.67x = 17,347,718,226.34
  5. Step 5: Solve for x
    x = 17,347,718,226.34/172,329.67
  6. Step 6: Final answer
    x = 100,665.88

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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.