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Finding the Fourth Proportional to 125,245.66, 172,850.97 and 71,538.70

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Solution

The fourth proportional to 125,245.66, 172,850.97 and 71,538.70 is: 98,730.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,245.66 : 172,850.97 = 71,538.70 : x
  2. Step 2: Convert to fraction form
    125,245.66/172,850.97 = 71,538.70/x
  3. Step 3: Cross multiply
    125,245.66x = 172,850.97 × 71,538.70
  4. Step 4: Simplify right side
    125,245.66x = 12,365,533,687.54
  5. Step 5: Solve for x
    x = 12,365,533,687.54/125,245.66
  6. Step 6: Final answer
    x = 98,730.24

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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.