Home / 87,607.40-131,420.70-84,842.60

Finding the Fourth Proportional to 87,607.40, 131,420.70 and 84,842.60

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Solution

The fourth proportional to 87,607.40, 131,420.70 and 84,842.60 is: 127,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,607.40 : 131,420.70 = 84,842.60 : x
  2. Step 2: Convert to fraction form
    87,607.40/131,420.70 = 84,842.60/x
  3. Step 3: Cross multiply
    87,607.40x = 131,420.70 × 84,842.60
  4. Step 4: Simplify right side
    87,607.40x = 11,150,073,881.82
  5. Step 5: Solve for x
    x = 11,150,073,881.82/87,607.40
  6. Step 6: Final answer
    x = 127,273.20

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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.