Home / 155,126.40-214,059.24-87,127.80

Finding the Fourth Proportional to 155,126.40, 214,059.24 and 87,127.80

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Solution

The fourth proportional to 155,126.40, 214,059.24 and 87,127.80 is: 120,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,126.40 : 214,059.24 = 87,127.80 : x
  2. Step 2: Convert to fraction form
    155,126.40/214,059.24 = 87,127.80/x
  3. Step 3: Cross multiply
    155,126.40x = 214,059.24 × 87,127.80
  4. Step 4: Simplify right side
    155,126.40x = 18,650,510,650.87
  5. Step 5: Solve for x
    x = 18,650,510,650.87/155,126.40
  6. Step 6: Final answer
    x = 120,227.83

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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.