Home / 112,387.75-155,098.11-61,402.63

Finding the Fourth Proportional to 112,387.75, 155,098.11 and 61,402.63

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Solution

The fourth proportional to 112,387.75, 155,098.11 and 61,402.63 is: 84,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,387.75 : 155,098.11 = 61,402.63 : x
  2. Step 2: Convert to fraction form
    112,387.75/155,098.11 = 61,402.63/x
  3. Step 3: Cross multiply
    112,387.75x = 155,098.11 × 61,402.63
  4. Step 4: Simplify right side
    112,387.75x = 9,523,431,862.03
  5. Step 5: Solve for x
    x = 9,523,431,862.03/112,387.75
  6. Step 6: Final answer
    x = 84,737.28

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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.