Home / 155,414.17-214,451.38-87,428.85

Finding the Fourth Proportional to 155,414.17, 214,451.38 and 87,428.85

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Solution

The fourth proportional to 155,414.17, 214,451.38 and 87,428.85 is: 120,640.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,414.17 : 214,451.38 = 87,428.85 : x
  2. Step 2: Convert to fraction form
    155,414.17/214,451.38 = 87,428.85/x
  3. Step 3: Cross multiply
    155,414.17x = 214,451.38 × 87,428.85
  4. Step 4: Simplify right side
    155,414.17x = 18,749,237,534.31
  5. Step 5: Solve for x
    x = 18,749,237,534.31/155,414.17
  6. Step 6: Final answer
    x = 120,640.46

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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.