Home / 157,543.12-217,444.80-100,171.36

Finding the Fourth Proportional to 157,543.12, 217,444.80 and 100,171.36

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Solution

The fourth proportional to 157,543.12, 217,444.80 and 100,171.36 is: 138,258.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,543.12 : 217,444.80 = 100,171.36 : x
  2. Step 2: Convert to fraction form
    157,543.12/217,444.80 = 100,171.36/x
  3. Step 3: Cross multiply
    157,543.12x = 217,444.80 × 100,171.36
  4. Step 4: Simplify right side
    157,543.12x = 21,781,741,340.93
  5. Step 5: Solve for x
    x = 21,781,741,340.93/157,543.12
  6. Step 6: Final answer
    x = 138,258.92

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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.