Home / 120,142.28-165,793.56-69,156.02

Finding the Fourth Proportional to 120,142.28, 165,793.56 and 69,156.02

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Solution

The fourth proportional to 120,142.28, 165,793.56 and 69,156.02 is: 95,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,142.28 : 165,793.56 = 69,156.02 : x
  2. Step 2: Convert to fraction form
    120,142.28/165,793.56 = 69,156.02/x
  3. Step 3: Cross multiply
    120,142.28x = 165,793.56 × 69,156.02
  4. Step 4: Simplify right side
    120,142.28x = 11,465,622,751.23
  5. Step 5: Solve for x
    x = 11,465,622,751.23/120,142.28
  6. Step 6: Final answer
    x = 95,433.70

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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.