Home / 100,199.17-138,275.78-68,367.38

Finding the Fourth Proportional to 100,199.17, 138,275.78 and 68,367.38

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Solution

The fourth proportional to 100,199.17, 138,275.78 and 68,367.38 is: 94,347.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,199.17 : 138,275.78 = 68,367.38 : x
  2. Step 2: Convert to fraction form
    100,199.17/138,275.78 = 68,367.38/x
  3. Step 3: Cross multiply
    100,199.17x = 138,275.78 × 68,367.38
  4. Step 4: Simplify right side
    100,199.17x = 9,453,552,799.91
  5. Step 5: Solve for x
    x = 9,453,552,799.91/100,199.17
  6. Step 6: Final answer
    x = 94,347.62

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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.