Home / 85,241.20-127,678.63-69,158.54

Finding the Fourth Proportional to 85,241.20, 127,678.63 and 69,158.54

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Solution

The fourth proportional to 85,241.20, 127,678.63 and 69,158.54 is: 103,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,241.20 : 127,678.63 = 69,158.54 : x
  2. Step 2: Convert to fraction form
    85,241.20/127,678.63 = 69,158.54/x
  3. Step 3: Cross multiply
    85,241.20x = 127,678.63 × 69,158.54
  4. Step 4: Simplify right side
    85,241.20x = 8,830,067,294.21
  5. Step 5: Solve for x
    x = 8,830,067,294.21/85,241.20
  6. Step 6: Final answer
    x = 103,589.20

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1.5x scale

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.