Home / 86,834.20-130,316.90-63,520.78

Finding the Fourth Proportional to 86,834.20, 130,316.90 and 63,520.78

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Solution

The fourth proportional to 86,834.20, 130,316.90 and 63,520.78 is: 95,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,834.20 : 130,316.90 = 63,520.78 : x
  2. Step 2: Convert to fraction form
    86,834.20/130,316.90 = 63,520.78/x
  3. Step 3: Cross multiply
    86,834.20x = 130,316.90 × 63,520.78
  4. Step 4: Simplify right side
    86,834.20x = 8,277,831,135.18
  5. Step 5: Solve for x
    x = 8,277,831,135.18/86,834.20
  6. Step 6: Final answer
    x = 95,329.16

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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.