Home / 75,165.18-112,753.03-30,186.54

Finding the Fourth Proportional to 75,165.18, 112,753.03 and 30,186.54

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Solution

The fourth proportional to 75,165.18, 112,753.03 and 30,186.54 is: 45,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,165.18 : 112,753.03 = 30,186.54 : x
  2. Step 2: Convert to fraction form
    75,165.18/112,753.03 = 30,186.54/x
  3. Step 3: Cross multiply
    75,165.18x = 112,753.03 × 30,186.54
  4. Step 4: Simplify right side
    75,165.18x = 3,403,623,286.45
  5. Step 5: Solve for x
    x = 3,403,623,286.45/75,165.18
  6. Step 6: Final answer
    x = 45,281.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.