Home / 112,767.78-155,617.50-61,781.52

Finding the Fourth Proportional to 112,767.78, 155,617.50 and 61,781.52

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Solution

The fourth proportional to 112,767.78, 155,617.50 and 61,781.52 is: 85,257.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,767.78 : 155,617.50 = 61,781.52 : x
  2. Step 2: Convert to fraction form
    112,767.78/155,617.50 = 61,781.52/x
  3. Step 3: Cross multiply
    112,767.78x = 155,617.50 × 61,781.52
  4. Step 4: Simplify right side
    112,767.78x = 9,614,285,688.60
  5. Step 5: Solve for x
    x = 9,614,285,688.60/112,767.78
  6. Step 6: Final answer
    x = 85,257.38

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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.