Home / 155,131.62-214,069.02-87,144.90

Finding the Fourth Proportional to 155,131.62, 214,069.02 and 87,144.90

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Solution

The fourth proportional to 155,131.62, 214,069.02 and 87,144.90 is: 120,252.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,131.62 : 214,069.02 = 87,144.90 : x
  2. Step 2: Convert to fraction form
    155,131.62/214,069.02 = 87,144.90/x
  3. Step 3: Cross multiply
    155,131.62x = 214,069.02 × 87,144.90
  4. Step 4: Simplify right side
    155,131.62x = 18,655,023,341.00
  5. Step 5: Solve for x
    x = 18,655,023,341.00/155,131.62
  6. Step 6: Final answer
    x = 120,252.88

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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.