Home / 87,623.40-131,435.10-80,365.80

Finding the Fourth Proportional to 87,623.40, 131,435.10 and 80,365.80

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Solution

The fourth proportional to 87,623.40, 131,435.10 and 80,365.80 is: 120,548.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,623.40 : 131,435.10 = 80,365.80 : x
  2. Step 2: Convert to fraction form
    87,623.40/131,435.10 = 80,365.80/x
  3. Step 3: Cross multiply
    87,623.40x = 131,435.10 × 80,365.80
  4. Step 4: Simplify right side
    87,623.40x = 10,562,886,959.58
  5. Step 5: Solve for x
    x = 10,562,886,959.58/87,623.40
  6. Step 6: Final answer
    x = 120,548.70

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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.