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Finding the Fourth Proportional to 139,606.65, 209,330.64 and 95,287.05

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Solution

The fourth proportional to 139,606.65, 209,330.64 and 95,287.05 is: 142,876.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,606.65 : 209,330.64 = 95,287.05 : x
  2. Step 2: Convert to fraction form
    139,606.65/209,330.64 = 95,287.05/x
  3. Step 3: Cross multiply
    139,606.65x = 209,330.64 × 95,287.05
  4. Step 4: Simplify right side
    139,606.65x = 19,946,499,160.21
  5. Step 5: Solve for x
    x = 19,946,499,160.21/139,606.65
  6. Step 6: Final answer
    x = 142,876.43

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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.