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Finding the Fourth Proportional to 100,614.06, 138,839.28 and 58,175.34

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Solution

The fourth proportional to 100,614.06, 138,839.28 and 58,175.34 is: 80,277.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,614.06 : 138,839.28 = 58,175.34 : x
  2. Step 2: Convert to fraction form
    100,614.06/138,839.28 = 58,175.34/x
  3. Step 3: Cross multiply
    100,614.06x = 138,839.28 × 58,175.34
  4. Step 4: Simplify right side
    100,614.06x = 8,077,022,319.36
  5. Step 5: Solve for x
    x = 8,077,022,319.36/100,614.06
  6. Step 6: Final answer
    x = 80,277.27

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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.