Home / 150,638.13-207,878.81-86,974.56

Finding the Fourth Proportional to 150,638.13, 207,878.81 and 86,974.56

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Solution

The fourth proportional to 150,638.13, 207,878.81 and 86,974.56 is: 120,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,638.13 : 207,878.81 = 86,974.56 : x
  2. Step 2: Convert to fraction form
    150,638.13/207,878.81 = 86,974.56/x
  3. Step 3: Cross multiply
    150,638.13x = 207,878.81 × 86,974.56
  4. Step 4: Simplify right side
    150,638.13x = 18,080,167,598.20
  5. Step 5: Solve for x
    x = 18,080,167,598.20/150,638.13
  6. Step 6: Final answer
    x = 120,023.85

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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.