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Finding the Fourth Proportional to 125,313.87, 172,942.31 and 71,597.73

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Solution

The fourth proportional to 125,313.87, 172,942.31 and 71,597.73 is: 98,810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,313.87 : 172,942.31 = 71,597.73 : x
  2. Step 2: Convert to fraction form
    125,313.87/172,942.31 = 71,597.73/x
  3. Step 3: Cross multiply
    125,313.87x = 172,942.31 × 71,597.73
  4. Step 4: Simplify right side
    125,313.87x = 12,382,276,816.96
  5. Step 5: Solve for x
    x = 12,382,276,816.96/125,313.87
  6. Step 6: Final answer
    x = 98,810.11

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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.