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Finding the Fourth Proportional to 156,791.79, 216,253.45 and 108,474.10

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Solution

The fourth proportional to 156,791.79, 216,253.45 and 108,474.10 is: 149,611.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,791.79 : 216,253.45 = 108,474.10 : x
  2. Step 2: Convert to fraction form
    156,791.79/216,253.45 = 108,474.10/x
  3. Step 3: Cross multiply
    156,791.79x = 216,253.45 × 108,474.10
  4. Step 4: Simplify right side
    156,791.79x = 23,457,898,360.65
  5. Step 5: Solve for x
    x = 23,457,898,360.65/156,791.79
  6. Step 6: Final answer
    x = 149,611.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.