Home / 124,875.29-172,212.91-81,839.11

Finding the Fourth Proportional to 124,875.29, 172,212.91 and 81,839.11

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Solution

The fourth proportional to 124,875.29, 172,212.91 and 81,839.11 is: 112,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,875.29 : 172,212.91 = 81,839.11 : x
  2. Step 2: Convert to fraction form
    124,875.29/172,212.91 = 81,839.11/x
  3. Step 3: Cross multiply
    124,875.29x = 172,212.91 × 81,839.11
  4. Step 4: Simplify right side
    124,875.29x = 14,093,750,476.33
  5. Step 5: Solve for x
    x = 14,093,750,476.33/124,875.29
  6. Step 6: Final answer
    x = 112,862.60

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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.