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Finding the Fourth Proportional to 123,920.20, 171,010.20 and 67,330.36

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Solution

The fourth proportional to 123,920.20, 171,010.20 and 67,330.36 is: 92,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,920.20 : 171,010.20 = 67,330.36 : x
  2. Step 2: Convert to fraction form
    123,920.20/171,010.20 = 67,330.36/x
  3. Step 3: Cross multiply
    123,920.20x = 171,010.20 × 67,330.36
  4. Step 4: Simplify right side
    123,920.20x = 11,514,178,329.67
  5. Step 5: Solve for x
    x = 11,514,178,329.67/123,920.20
  6. Step 6: Final answer
    x = 92,916.07

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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.