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Finding the Fourth Proportional to 156,791.70, 216,462.30 and 103,232.40

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Solution

The fourth proportional to 156,791.70, 216,462.30 and 103,232.40 is: 142,519.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,791.70 : 216,462.30 = 103,232.40 : x
  2. Step 2: Convert to fraction form
    156,791.70/216,462.30 = 103,232.40/x
  3. Step 3: Cross multiply
    156,791.70x = 216,462.30 × 103,232.40
  4. Step 4: Simplify right side
    156,791.70x = 22,345,922,738.52
  5. Step 5: Solve for x
    x = 22,345,922,738.52/156,791.70
  6. Step 6: Final answer
    x = 142,519.81

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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.