Home / 155,122.90-214,046.28-87,126.84

Finding the Fourth Proportional to 155,122.90, 214,046.28 and 87,126.84

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Solution

The fourth proportional to 155,122.90, 214,046.28 and 87,126.84 is: 120,221.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,122.90 : 214,046.28 = 87,126.84 : x
  2. Step 2: Convert to fraction form
    155,122.90/214,046.28 = 87,126.84/x
  3. Step 3: Cross multiply
    155,122.90x = 214,046.28 × 87,126.84
  4. Step 4: Simplify right side
    155,122.90x = 18,649,175,990.16
  5. Step 5: Solve for x
    x = 18,649,175,990.16/155,122.90
  6. Step 6: Final answer
    x = 120,221.94

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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.