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Finding the Fourth Proportional to 100,597.28, 138,841.18 and 58,180.28

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Solution

The fourth proportional to 100,597.28, 138,841.18 and 58,180.28 is: 80,298.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,597.28 : 138,841.18 = 58,180.28 : x
  2. Step 2: Convert to fraction form
    100,597.28/138,841.18 = 58,180.28/x
  3. Step 3: Cross multiply
    100,597.28x = 138,841.18 × 58,180.28
  4. Step 4: Simplify right side
    100,597.28x = 8,077,818,727.93
  5. Step 5: Solve for x
    x = 8,077,818,727.93/100,597.28
  6. Step 6: Final answer
    x = 80,298.58

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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.