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Finding the Fourth Proportional to 123,574.64, 170,540.35 and 69,864.65

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Solution

The fourth proportional to 123,574.64, 170,540.35 and 69,864.65 is: 96,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,574.64 : 170,540.35 = 69,864.65 : x
  2. Step 2: Convert to fraction form
    123,574.64/170,540.35 = 69,864.65/x
  3. Step 3: Cross multiply
    123,574.64x = 170,540.35 × 69,864.65
  4. Step 4: Simplify right side
    123,574.64x = 11,914,741,475.79
  5. Step 5: Solve for x
    x = 11,914,741,475.79/123,574.64
  6. Step 6: Final answer
    x = 96,417.37

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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.