Home / 155,144.16-214,100.28-87,162.48

Finding the Fourth Proportional to 155,144.16, 214,100.28 and 87,162.48

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Solution

The fourth proportional to 155,144.16, 214,100.28 and 87,162.48 is: 120,284.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,144.16 : 214,100.28 = 87,162.48 : x
  2. Step 2: Convert to fraction form
    155,144.16/214,100.28 = 87,162.48/x
  3. Step 3: Cross multiply
    155,144.16x = 214,100.28 × 87,162.48
  4. Step 4: Simplify right side
    155,144.16x = 18,661,511,373.49
  5. Step 5: Solve for x
    x = 18,661,511,373.49/155,144.16
  6. Step 6: Final answer
    x = 120,284.97

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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.