Home / 100,366.24-138,503.34-62,115.61

Finding the Fourth Proportional to 100,366.24, 138,503.34 and 62,115.61

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Solution

The fourth proportional to 100,366.24, 138,503.34 and 62,115.61 is: 85,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,366.24 : 138,503.34 = 62,115.61 : x
  2. Step 2: Convert to fraction form
    100,366.24/138,503.34 = 62,115.61/x
  3. Step 3: Cross multiply
    100,366.24x = 138,503.34 × 62,115.61
  4. Step 4: Simplify right side
    100,366.24x = 8,603,219,451.14
  5. Step 5: Solve for x
    x = 8,603,219,451.14/100,366.24
  6. Step 6: Final answer
    x = 85,718.26

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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.