Home / 157,703.38-217,708.77-100,399.66

Finding the Fourth Proportional to 157,703.38, 217,708.77 and 100,399.66

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Solution

The fourth proportional to 157,703.38, 217,708.77 and 100,399.66 is: 138,601.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,703.38 : 217,708.77 = 100,399.66 : x
  2. Step 2: Convert to fraction form
    157,703.38/217,708.77 = 100,399.66/x
  3. Step 3: Cross multiply
    157,703.38x = 217,708.77 × 100,399.66
  4. Step 4: Simplify right side
    157,703.38x = 21,857,886,487.02
  5. Step 5: Solve for x
    x = 21,857,886,487.02/157,703.38
  6. Step 6: Final answer
    x = 138,601.26

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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.