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Finding the Fourth Proportional to 201,663.87, 278,526.46 and 137,025.11

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Solution

The fourth proportional to 201,663.87, 278,526.46 and 137,025.11 is: 189,251.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,663.87 : 278,526.46 = 137,025.11 : x
  2. Step 2: Convert to fraction form
    201,663.87/278,526.46 = 137,025.11/x
  3. Step 3: Cross multiply
    201,663.87x = 278,526.46 × 137,025.11
  4. Step 4: Simplify right side
    201,663.87x = 38,165,118,594.55
  5. Step 5: Solve for x
    x = 38,165,118,594.55/201,663.87
  6. Step 6: Final answer
    x = 189,251.15

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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.