Home / 100,499.94-138,680.10-58,057.56

Finding the Fourth Proportional to 100,499.94, 138,680.10 and 58,057.56

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Solution

The fourth proportional to 100,499.94, 138,680.10 and 58,057.56 is: 80,113.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,499.94 : 138,680.10 = 58,057.56 : x
  2. Step 2: Convert to fraction form
    100,499.94/138,680.10 = 58,057.56/x
  3. Step 3: Cross multiply
    100,499.94x = 138,680.10 × 58,057.56
  4. Step 4: Simplify right side
    100,499.94x = 8,051,428,226.56
  5. Step 5: Solve for x
    x = 8,051,428,226.56/100,499.94
  6. Step 6: Final answer
    x = 80,113.76

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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.