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Finding the Fourth Proportional to 100,260.75, 138,359.84 and 59,976.21

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Solution

The fourth proportional to 100,260.75, 138,359.84 and 59,976.21 is: 82,767.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,260.75 : 138,359.84 = 59,976.21 : x
  2. Step 2: Convert to fraction form
    100,260.75/138,359.84 = 59,976.21/x
  3. Step 3: Cross multiply
    100,260.75x = 138,359.84 × 59,976.21
  4. Step 4: Simplify right side
    100,260.75x = 8,298,298,519.53
  5. Step 5: Solve for x
    x = 8,298,298,519.53/100,260.75
  6. Step 6: Final answer
    x = 82,767.17

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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.