Home / 100,501.12-138,691.82-55,182.04

Finding the Fourth Proportional to 100,501.12, 138,691.82 and 55,182.04

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Solution

The fourth proportional to 100,501.12, 138,691.82 and 55,182.04 is: 76,151.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,501.12 : 138,691.82 = 55,182.04 : x
  2. Step 2: Convert to fraction form
    100,501.12/138,691.82 = 55,182.04/x
  3. Step 3: Cross multiply
    100,501.12x = 138,691.82 × 55,182.04
  4. Step 4: Simplify right side
    100,501.12x = 7,653,297,622.77
  5. Step 5: Solve for x
    x = 7,653,297,622.77/100,501.12
  6. Step 6: Final answer
    x = 76,151.37

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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.