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Finding the Fourth Proportional to 139,362.32, 209,312.40 and 119,416.88

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Solution

The fourth proportional to 139,362.32, 209,312.40 and 119,416.88 is: 179,355.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,362.32 : 209,312.40 = 119,416.88 : x
  2. Step 2: Convert to fraction form
    139,362.32/209,312.40 = 119,416.88/x
  3. Step 3: Cross multiply
    139,362.32x = 209,312.40 × 119,416.88
  4. Step 4: Simplify right side
    139,362.32x = 24,995,433,753.31
  5. Step 5: Solve for x
    x = 24,995,433,753.31/139,362.32
  6. Step 6: Final answer
    x = 179,355.75

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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.