Home / 187,116.30-258,147.14-115,371.72

Finding the Fourth Proportional to 187,116.30, 258,147.14 and 115,371.72

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Solution

The fourth proportional to 187,116.30, 258,147.14 and 115,371.72 is: 159,167.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,116.30 : 258,147.14 = 115,371.72 : x
  2. Step 2: Convert to fraction form
    187,116.30/258,147.14 = 115,371.72/x
  3. Step 3: Cross multiply
    187,116.30x = 258,147.14 × 115,371.72
  4. Step 4: Simplify right side
    187,116.30x = 29,782,878,978.02
  5. Step 5: Solve for x
    x = 29,782,878,978.02/187,116.30
  6. Step 6: Final answer
    x = 159,167.74

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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.