Home / 87,948.80-131,923.20-87,430.40

Finding the Fourth Proportional to 87,948.80, 131,923.20 and 87,430.40

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Solution

The fourth proportional to 87,948.80, 131,923.20 and 87,430.40 is: 131,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,948.80 : 131,923.20 = 87,430.40 : x
  2. Step 2: Convert to fraction form
    87,948.80/131,923.20 = 87,430.40/x
  3. Step 3: Cross multiply
    87,948.80x = 131,923.20 × 87,430.40
  4. Step 4: Simplify right side
    87,948.80x = 11,534,098,145.28
  5. Step 5: Solve for x
    x = 11,534,098,145.28/87,948.80
  6. Step 6: Final answer
    x = 131,145.60

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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.