Home / 187,503.20-258,680.40-115,758.72

Finding the Fourth Proportional to 187,503.20, 258,680.40 and 115,758.72

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Solution

The fourth proportional to 187,503.20, 258,680.40 and 115,758.72 is: 159,701.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,503.20 : 258,680.40 = 115,758.72 : x
  2. Step 2: Convert to fraction form
    187,503.20/258,680.40 = 115,758.72/x
  3. Step 3: Cross multiply
    187,503.20x = 258,680.40 × 115,758.72
  4. Step 4: Simplify right side
    187,503.20x = 29,944,511,993.09
  5. Step 5: Solve for x
    x = 29,944,511,993.09/187,503.20
  6. Step 6: Final answer
    x = 159,701.34

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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.