Home / 97,764.80-146,825.40-85,517.60

Finding the Fourth Proportional to 97,764.80, 146,825.40 and 85,517.60

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Solution

The fourth proportional to 97,764.80, 146,825.40 and 85,517.60 is: 128,432.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,764.80 : 146,825.40 = 85,517.60 : x
  2. Step 2: Convert to fraction form
    97,764.80/146,825.40 = 85,517.60/x
  3. Step 3: Cross multiply
    97,764.80x = 146,825.40 × 85,517.60
  4. Step 4: Simplify right side
    97,764.80x = 12,556,155,827.04
  5. Step 5: Solve for x
    x = 12,556,155,827.04/97,764.80
  6. Step 6: Final answer
    x = 128,432.28

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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.