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Finding the Fourth Proportional to 125,713.02, 188,362.14 and 72,449.73

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Solution

The fourth proportional to 125,713.02, 188,362.14 and 72,449.73 is: 108,555.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,713.02 : 188,362.14 = 72,449.73 : x
  2. Step 2: Convert to fraction form
    125,713.02/188,362.14 = 72,449.73/x
  3. Step 3: Cross multiply
    125,713.02x = 188,362.14 × 72,449.73
  4. Step 4: Simplify right side
    125,713.02x = 13,646,786,837.25
  5. Step 5: Solve for x
    x = 13,646,786,837.25/125,713.02
  6. Step 6: Final answer
    x = 108,555.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.