Home / 112,375.29-155,078.13-61,388.40

Finding the Fourth Proportional to 112,375.29, 155,078.13 and 61,388.40

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Solution

The fourth proportional to 112,375.29, 155,078.13 and 61,388.40 is: 84,716.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,375.29 : 155,078.13 = 61,388.40 : x
  2. Step 2: Convert to fraction form
    112,375.29/155,078.13 = 61,388.40/x
  3. Step 3: Cross multiply
    112,375.29x = 155,078.13 × 61,388.40
  4. Step 4: Simplify right side
    112,375.29x = 9,519,998,275.69
  5. Step 5: Solve for x
    x = 9,519,998,275.69/112,375.29
  6. Step 6: Final answer
    x = 84,716.12

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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.