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Finding the Fourth Proportional to 125,155.21, 172,713.15 and 67,793.20

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Solution

The fourth proportional to 125,155.21, 172,713.15 and 67,793.20 is: 93,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,155.21 : 172,713.15 = 67,793.20 : x
  2. Step 2: Convert to fraction form
    125,155.21/172,713.15 = 67,793.20/x
  3. Step 3: Cross multiply
    125,155.21x = 172,713.15 × 67,793.20
  4. Step 4: Simplify right side
    125,155.21x = 11,708,777,120.58
  5. Step 5: Solve for x
    x = 11,708,777,120.58/125,155.21
  6. Step 6: Final answer
    x = 93,554.05

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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.