Home / 124,781.07-172,209.75-68,200.95

Finding the Fourth Proportional to 124,781.07, 172,209.75 and 68,200.95

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Solution

The fourth proportional to 124,781.07, 172,209.75 and 68,200.95 is: 94,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,781.07 : 172,209.75 = 68,200.95 : x
  2. Step 2: Convert to fraction form
    124,781.07/172,209.75 = 68,200.95/x
  3. Step 3: Cross multiply
    124,781.07x = 172,209.75 × 68,200.95
  4. Step 4: Simplify right side
    124,781.07x = 11,744,868,549.26
  5. Step 5: Solve for x
    x = 11,744,868,549.26/124,781.07
  6. Step 6: Final answer
    x = 94,123.80

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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.