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Finding the Fourth Proportional to 123,920.70, 171,010.89 and 67,330.86

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Solution

The fourth proportional to 123,920.70, 171,010.89 and 67,330.86 is: 92,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,920.70 : 171,010.89 = 67,330.86 : x
  2. Step 2: Convert to fraction form
    123,920.70/171,010.89 = 67,330.86/x
  3. Step 3: Cross multiply
    123,920.70x = 171,010.89 × 67,330.86
  4. Step 4: Simplify right side
    123,920.70x = 11,514,310,293.07
  5. Step 5: Solve for x
    x = 11,514,310,293.07/123,920.70
  6. Step 6: Final answer
    x = 92,916.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.