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Finding the Fourth Proportional to 139,335.36, 209,000.16 and 34,154.88

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Solution

The fourth proportional to 139,335.36, 209,000.16 and 34,154.88 is: 51,231.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,335.36 : 209,000.16 = 34,154.88 : x
  2. Step 2: Convert to fraction form
    139,335.36/209,000.16 = 34,154.88/x
  3. Step 3: Cross multiply
    139,335.36x = 209,000.16 × 34,154.88
  4. Step 4: Simplify right side
    139,335.36x = 7,138,375,384.78
  5. Step 5: Solve for x
    x = 7,138,375,384.78/139,335.36
  6. Step 6: Final answer
    x = 51,231.61

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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.