Home / 155,399.42-214,431.02-87,414.10

Finding the Fourth Proportional to 155,399.42, 214,431.02 and 87,414.10

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Solution

The fourth proportional to 155,399.42, 214,431.02 and 87,414.10 is: 120,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,399.42 : 214,431.02 = 87,414.10 : x
  2. Step 2: Convert to fraction form
    155,399.42/214,431.02 = 87,414.10/x
  3. Step 3: Cross multiply
    155,399.42x = 214,431.02 × 87,414.10
  4. Step 4: Simplify right side
    155,399.42x = 18,744,293,553.23
  5. Step 5: Solve for x
    x = 18,744,293,553.23/155,399.42
  6. Step 6: Final answer
    x = 120,620.10

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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.