Home / 87,360.10-131,040.15-85,902.10

Finding the Fourth Proportional to 87,360.10, 131,040.15 and 85,902.10

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Solution

The fourth proportional to 87,360.10, 131,040.15 and 85,902.10 is: 128,853.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,360.10 : 131,040.15 = 85,902.10 : x
  2. Step 2: Convert to fraction form
    87,360.10/131,040.15 = 85,902.10/x
  3. Step 3: Cross multiply
    87,360.10x = 131,040.15 × 85,902.10
  4. Step 4: Simplify right side
    87,360.10x = 11,256,624,069.32
  5. Step 5: Solve for x
    x = 11,256,624,069.32/87,360.10
  6. Step 6: Final answer
    x = 128,853.15

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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.