Home / 124,785.18-172,234.15-71,101.86

Finding the Fourth Proportional to 124,785.18, 172,234.15 and 71,101.86

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Solution

The fourth proportional to 124,785.18, 172,234.15 and 71,101.86 is: 98,138.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,785.18 : 172,234.15 = 71,101.86 : x
  2. Step 2: Convert to fraction form
    124,785.18/172,234.15 = 71,101.86/x
  3. Step 3: Cross multiply
    124,785.18x = 172,234.15 × 71,101.86
  4. Step 4: Simplify right side
    124,785.18x = 12,246,168,078.81
  5. Step 5: Solve for x
    x = 12,246,168,078.81/124,785.18
  6. Step 6: Final answer
    x = 98,138.00

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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.