Home / 100,428.53-138,595.46-60,134.27

Finding the Fourth Proportional to 100,428.53, 138,595.46 and 60,134.27

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Solution

The fourth proportional to 100,428.53, 138,595.46 and 60,134.27 is: 82,987.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,428.53 : 138,595.46 = 60,134.27 : x
  2. Step 2: Convert to fraction form
    100,428.53/138,595.46 = 60,134.27/x
  3. Step 3: Cross multiply
    100,428.53x = 138,595.46 × 60,134.27
  4. Step 4: Simplify right side
    100,428.53x = 8,334,335,818.77
  5. Step 5: Solve for x
    x = 8,334,335,818.77/100,428.53
  6. Step 6: Final answer
    x = 82,987.73

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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.