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Finding the Fourth Proportional to 139,520.90, 209,282.16 and 34,339.16

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Solution

The fourth proportional to 139,520.90, 209,282.16 and 34,339.16 is: 51,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,520.90 : 209,282.16 = 34,339.16 : x
  2. Step 2: Convert to fraction form
    139,520.90/209,282.16 = 34,339.16/x
  3. Step 3: Cross multiply
    139,520.90x = 209,282.16 × 34,339.16
  4. Step 4: Simplify right side
    139,520.90x = 7,186,572,530.97
  5. Step 5: Solve for x
    x = 7,186,572,530.97/139,520.90
  6. Step 6: Final answer
    x = 51,508.93

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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.