Home / 157,542.12-217,443.42-100,170.36

Finding the Fourth Proportional to 157,542.12, 217,443.42 and 100,170.36

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Solution

The fourth proportional to 157,542.12, 217,443.42 and 100,170.36 is: 138,257.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,542.12 : 217,443.42 = 100,170.36 : x
  2. Step 2: Convert to fraction form
    157,542.12/217,443.42 = 100,170.36/x
  3. Step 3: Cross multiply
    157,542.12x = 217,443.42 × 100,170.36
  4. Step 4: Simplify right side
    157,542.12x = 21,781,385,661.03
  5. Step 5: Solve for x
    x = 21,781,385,661.03/157,542.12
  6. Step 6: Final answer
    x = 138,257.54

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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.