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Finding the Fourth Proportional to 119,073.62, 178,615.92 and 40,188.56

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Solution

The fourth proportional to 119,073.62, 178,615.92 and 40,188.56 is: 60,284.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,073.62 : 178,615.92 = 40,188.56 : x
  2. Step 2: Convert to fraction form
    119,073.62/178,615.92 = 40,188.56/x
  3. Step 3: Cross multiply
    119,073.62x = 178,615.92 × 40,188.56
  4. Step 4: Simplify right side
    119,073.62x = 7,178,316,617.88
  5. Step 5: Solve for x
    x = 7,178,316,617.88/119,073.62
  6. Step 6: Final answer
    x = 60,284.69

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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.