Home / 100,385.91-138,544.14-60,099.66

Finding the Fourth Proportional to 100,385.91, 138,544.14 and 60,099.66

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Solution

The fourth proportional to 100,385.91, 138,544.14 and 60,099.66 is: 82,944.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,385.91 : 138,544.14 = 60,099.66 : x
  2. Step 2: Convert to fraction form
    100,385.91/138,544.14 = 60,099.66/x
  3. Step 3: Cross multiply
    100,385.91x = 138,544.14 × 60,099.66
  4. Step 4: Simplify right side
    100,385.91x = 8,326,455,708.99
  5. Step 5: Solve for x
    x = 8,326,455,708.99/100,385.91
  6. Step 6: Final answer
    x = 82,944.47

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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.