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Finding the Fourth Proportional to 138,428.08, 207,607.56 and 44,960.56

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Solution

The fourth proportional to 138,428.08, 207,607.56 and 44,960.56 is: 67,429.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,428.08 : 207,607.56 = 44,960.56 : x
  2. Step 2: Convert to fraction form
    138,428.08/207,607.56 = 44,960.56/x
  3. Step 3: Cross multiply
    138,428.08x = 207,607.56 × 44,960.56
  4. Step 4: Simplify right side
    138,428.08x = 9,334,152,157.83
  5. Step 5: Solve for x
    x = 9,334,152,157.83/138,428.08
  6. Step 6: Final answer
    x = 67,429.62

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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.