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Finding the Fourth Proportional to 139,750.68, 209,593.62 and 39,908.28

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Solution

The fourth proportional to 139,750.68, 209,593.62 and 39,908.28 is: 59,853.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,750.68 : 209,593.62 = 39,908.28 : x
  2. Step 2: Convert to fraction form
    139,750.68/209,593.62 = 39,908.28/x
  3. Step 3: Cross multiply
    139,750.68x = 209,593.62 × 39,908.28
  4. Step 4: Simplify right side
    139,750.68x = 8,364,520,873.17
  5. Step 5: Solve for x
    x = 8,364,520,873.17/139,750.68
  6. Step 6: Final answer
    x = 59,853.17

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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.