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Finding the Fourth Proportional to 156,629.74, 216,253.12 and 92,987.98

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Solution

The fourth proportional to 156,629.74, 216,253.12 and 92,987.98 is: 128,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.74 : 216,253.12 = 92,987.98 : x
  2. Step 2: Convert to fraction form
    156,629.74/216,253.12 = 92,987.98/x
  3. Step 3: Cross multiply
    156,629.74x = 216,253.12 × 92,987.98
  4. Step 4: Simplify right side
    156,629.74x = 20,108,940,797.50
  5. Step 5: Solve for x
    x = 20,108,940,797.50/156,629.74
  6. Step 6: Final answer
    x = 128,385.20

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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.