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Finding the Fourth Proportional to 122,562.74, 169,155 and 74,843.62

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Solution

The fourth proportional to 122,562.74, 169,155 and 74,843.62 is: 103,295.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,562.74 : 169,155 = 74,843.62 : x
  2. Step 2: Convert to fraction form
    122,562.74/169,155 = 74,843.62/x
  3. Step 3: Cross multiply
    122,562.74x = 169,155 × 74,843.62
  4. Step 4: Simplify right side
    122,562.74x = 12,660,172,541.10
  5. Step 5: Solve for x
    x = 12,660,172,541.10/122,562.74
  6. Step 6: Final answer
    x = 103,295.44

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1.5x scale

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.