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Finding the Fourth Proportional to 122,582, 169,050.84 and 79,516.64

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Solution

The fourth proportional to 122,582, 169,050.84 and 79,516.64 is: 109,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,582 : 169,050.84 = 79,516.64 : x
  2. Step 2: Convert to fraction form
    122,582/169,050.84 = 79,516.64/x
  3. Step 3: Cross multiply
    122,582x = 169,050.84 × 79,516.64
  4. Step 4: Simplify right side
    122,582x = 13,442,354,785.98
  5. Step 5: Solve for x
    x = 13,442,354,785.98/122,582
  6. Step 6: Final answer
    x = 109,660.10

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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.