Home / 100,258.43-138,349.76-58,879.04

Finding the Fourth Proportional to 100,258.43, 138,349.76 and 58,879.04

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Solution

The fourth proportional to 100,258.43, 138,349.76 and 58,879.04 is: 81,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,258.43 : 138,349.76 = 58,879.04 : x
  2. Step 2: Convert to fraction form
    100,258.43/138,349.76 = 58,879.04/x
  3. Step 3: Cross multiply
    100,258.43x = 138,349.76 × 58,879.04
  4. Step 4: Simplify right side
    100,258.43x = 8,145,900,066.89
  5. Step 5: Solve for x
    x = 8,145,900,066.89/100,258.43
  6. Step 6: Final answer
    x = 81,249.03

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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.