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Finding the Fourth Proportional to 171,392.64, 256,641.84 and 137,929.92

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Solution

The fourth proportional to 171,392.64, 256,641.84 and 137,929.92 is: 206,535.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,392.64 : 256,641.84 = 137,929.92 : x
  2. Step 2: Convert to fraction form
    171,392.64/256,641.84 = 137,929.92/x
  3. Step 3: Cross multiply
    171,392.64x = 256,641.84 × 137,929.92
  4. Step 4: Simplify right side
    171,392.64x = 35,398,588,459.85
  5. Step 5: Solve for x
    x = 35,398,588,459.85/171,392.64
  6. Step 6: Final answer
    x = 206,535.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.