Home / 97,961.20-146,812.20-86,815.60

Finding the Fourth Proportional to 97,961.20, 146,812.20 and 86,815.60

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Solution

The fourth proportional to 97,961.20, 146,812.20 and 86,815.60 is: 130,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,961.20 : 146,812.20 = 86,815.60 : x
  2. Step 2: Convert to fraction form
    97,961.20/146,812.20 = 86,815.60/x
  3. Step 3: Cross multiply
    97,961.20x = 146,812.20 × 86,815.60
  4. Step 4: Simplify right side
    97,961.20x = 12,745,589,230.32
  5. Step 5: Solve for x
    x = 12,745,589,230.32/97,961.20
  6. Step 6: Final answer
    x = 130,108.55

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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.