Home / 112,515.31-155,264.85-61,517.89

Finding the Fourth Proportional to 112,515.31, 155,264.85 and 61,517.89

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Solution

The fourth proportional to 112,515.31, 155,264.85 and 61,517.89 is: 84,891.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,515.31 : 155,264.85 = 61,517.89 : x
  2. Step 2: Convert to fraction form
    112,515.31/155,264.85 = 61,517.89/x
  3. Step 3: Cross multiply
    112,515.31x = 155,264.85 × 61,517.89
  4. Step 4: Simplify right side
    112,515.31x = 9,551,566,157.25
  5. Step 5: Solve for x
    x = 9,551,566,157.25/112,515.31
  6. Step 6: Final answer
    x = 84,891.26

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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.