Home / 155,122.28-214,045.42-87,126.22

Finding the Fourth Proportional to 155,122.28, 214,045.42 and 87,126.22

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Solution

The fourth proportional to 155,122.28, 214,045.42 and 87,126.22 is: 120,221.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,122.28 : 214,045.42 = 87,126.22 : x
  2. Step 2: Convert to fraction form
    155,122.28/214,045.42 = 87,126.22/x
  3. Step 3: Cross multiply
    155,122.28x = 214,045.42 × 87,126.22
  4. Step 4: Simplify right side
    155,122.28x = 18,648,966,847.05
  5. Step 5: Solve for x
    x = 18,648,966,847.05/155,122.28
  6. Step 6: Final answer
    x = 120,221.08

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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.