Home / 157,636.80-217,519.20-100,282.72

Finding the Fourth Proportional to 157,636.80, 217,519.20 and 100,282.72

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Solution

The fourth proportional to 157,636.80, 217,519.20 and 100,282.72 is: 138,377.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,636.80 : 217,519.20 = 100,282.72 : x
  2. Step 2: Convert to fraction form
    157,636.80/217,519.20 = 100,282.72/x
  3. Step 3: Cross multiply
    157,636.80x = 217,519.20 × 100,282.72
  4. Step 4: Simplify right side
    157,636.80x = 21,813,417,028.22
  5. Step 5: Solve for x
    x = 21,813,417,028.22/157,636.80
  6. Step 6: Final answer
    x = 138,377.69

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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.