Home / 187,211.52-258,487.20-115,689.60

Finding the Fourth Proportional to 187,211.52, 258,487.20 and 115,689.60

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Solution

The fourth proportional to 187,211.52, 258,487.20 and 115,689.60 is: 159,735.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,211.52 : 258,487.20 = 115,689.60 : x
  2. Step 2: Convert to fraction form
    187,211.52/258,487.20 = 115,689.60/x
  3. Step 3: Cross multiply
    187,211.52x = 258,487.20 × 115,689.60
  4. Step 4: Simplify right side
    187,211.52x = 29,904,280,773.12
  5. Step 5: Solve for x
    x = 29,904,280,773.12/187,211.52
  6. Step 6: Final answer
    x = 159,735.26

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1.5x scale

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.