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Finding the Fourth Proportional to 139,612.65, 209,339.64 and 95,293.05

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Solution

The fourth proportional to 139,612.65, 209,339.64 and 95,293.05 is: 142,885.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,612.65 : 209,339.64 = 95,293.05 : x
  2. Step 2: Convert to fraction form
    139,612.65/209,339.64 = 95,293.05/x
  3. Step 3: Cross multiply
    139,612.65x = 209,339.64 × 95,293.05
  4. Step 4: Simplify right side
    139,612.65x = 19,948,612,781.50
  5. Step 5: Solve for x
    x = 19,948,612,781.50/139,612.65
  6. Step 6: Final answer
    x = 142,885.42

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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.