Home / 87,430.60-131,243.10-54,188.20

Finding the Fourth Proportional to 87,430.60, 131,243.10 and 54,188.20

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Solution

The fourth proportional to 87,430.60, 131,243.10 and 54,188.20 is: 81,342.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,430.60 : 131,243.10 = 54,188.20 : x
  2. Step 2: Convert to fraction form
    87,430.60/131,243.10 = 54,188.20/x
  3. Step 3: Cross multiply
    87,430.60x = 131,243.10 × 54,188.20
  4. Step 4: Simplify right side
    87,430.60x = 7,111,827,351.42
  5. Step 5: Solve for x
    x = 7,111,827,351.42/87,430.60
  6. Step 6: Final answer
    x = 81,342.54

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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.