Home / 138,770.55-208,219.23-75,495.83

Finding the Fourth Proportional to 138,770.55, 208,219.23 and 75,495.83

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Solution

The fourth proportional to 138,770.55, 208,219.23 and 75,495.83 is: 113,278.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,770.55 : 208,219.23 = 75,495.83 : x
  2. Step 2: Convert to fraction form
    138,770.55/208,219.23 = 75,495.83/x
  3. Step 3: Cross multiply
    138,770.55x = 208,219.23 × 75,495.83
  4. Step 4: Simplify right side
    138,770.55x = 15,719,682,549.71
  5. Step 5: Solve for x
    x = 15,719,682,549.71/138,770.55
  6. Step 6: Final answer
    x = 113,278.23

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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.