Home / 155,945.55-215,200.04-87,961.55

Finding the Fourth Proportional to 155,945.55, 215,200.04 and 87,961.55

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Solution

The fourth proportional to 155,945.55, 215,200.04 and 87,961.55 is: 121,384.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,945.55 : 215,200.04 = 87,961.55 : x
  2. Step 2: Convert to fraction form
    155,945.55/215,200.04 = 87,961.55/x
  3. Step 3: Cross multiply
    155,945.55x = 215,200.04 × 87,961.55
  4. Step 4: Simplify right side
    155,945.55x = 18,929,328,057.44
  5. Step 5: Solve for x
    x = 18,929,328,057.44/155,945.55
  6. Step 6: Final answer
    x = 121,384.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.