Home / 100,247.16-138,288.60-61,994.52

Finding the Fourth Proportional to 100,247.16, 138,288.60 and 61,994.52

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Solution

The fourth proportional to 100,247.16, 138,288.60 and 61,994.52 is: 85,519.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,247.16 : 138,288.60 = 61,994.52 : x
  2. Step 2: Convert to fraction form
    100,247.16/138,288.60 = 61,994.52/x
  3. Step 3: Cross multiply
    100,247.16x = 138,288.60 × 61,994.52
  4. Step 4: Simplify right side
    100,247.16x = 8,573,135,378.47
  5. Step 5: Solve for x
    x = 8,573,135,378.47/100,247.16
  6. Step 6: Final answer
    x = 85,519.98

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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.