Home / 112,768.89-155,619.18-61,781.15

Finding the Fourth Proportional to 112,768.89, 155,619.18 and 61,781.15

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Solution

The fourth proportional to 112,768.89, 155,619.18 and 61,781.15 is: 85,256.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,768.89 : 155,619.18 = 61,781.15 : x
  2. Step 2: Convert to fraction form
    112,768.89/155,619.18 = 61,781.15/x
  3. Step 3: Cross multiply
    112,768.89x = 155,619.18 × 61,781.15
  4. Step 4: Simplify right side
    112,768.89x = 9,614,331,124.36
  5. Step 5: Solve for x
    x = 9,614,331,124.36/112,768.89
  6. Step 6: Final answer
    x = 85,256.95

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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.