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Finding the Fourth Proportional to 139,398.47, 209,101.80 and 34,217.44

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Solution

The fourth proportional to 139,398.47, 209,101.80 and 34,217.44 is: 51,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,398.47 : 209,101.80 = 34,217.44 : x
  2. Step 2: Convert to fraction form
    139,398.47/209,101.80 = 34,217.44/x
  3. Step 3: Cross multiply
    139,398.47x = 209,101.80 × 34,217.44
  4. Step 4: Simplify right side
    139,398.47x = 7,154,927,900.95
  5. Step 5: Solve for x
    x = 7,154,927,900.95/139,398.47
  6. Step 6: Final answer
    x = 51,327.16

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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.