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Finding the Fourth Proportional to 192,167.72, 288,095.76 and 79,931.90

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Solution

The fourth proportional to 192,167.72, 288,095.76 and 79,931.90 is: 119,833.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,167.72 : 288,095.76 = 79,931.90 : x
  2. Step 2: Convert to fraction form
    192,167.72/288,095.76 = 79,931.90/x
  3. Step 3: Cross multiply
    192,167.72x = 288,095.76 × 79,931.90
  4. Step 4: Simplify right side
    192,167.72x = 23,028,041,478.74
  5. Step 5: Solve for x
    x = 23,028,041,478.74/192,167.72
  6. Step 6: Final answer
    x = 119,833.04

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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.