Home / 100,425.28-138,591.21-60,131.34

Finding the Fourth Proportional to 100,425.28, 138,591.21 and 60,131.34

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Solution

The fourth proportional to 100,425.28, 138,591.21 and 60,131.34 is: 82,983.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,425.28 : 138,591.21 = 60,131.34 : x
  2. Step 2: Convert to fraction form
    100,425.28/138,591.21 = 60,131.34/x
  3. Step 3: Cross multiply
    100,425.28x = 138,591.21 × 60,131.34
  4. Step 4: Simplify right side
    100,425.28x = 8,333,674,836.11
  5. Step 5: Solve for x
    x = 8,333,674,836.11/100,425.28
  6. Step 6: Final answer
    x = 82,983.84

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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.