Home / 120,147.36-180,103.34-66,864.75

Finding the Fourth Proportional to 120,147.36, 180,103.34 and 66,864.75

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Solution

The fourth proportional to 120,147.36, 180,103.34 and 66,864.75 is: 100,231.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,147.36 : 180,103.34 = 66,864.75 : x
  2. Step 2: Convert to fraction form
    120,147.36/180,103.34 = 66,864.75/x
  3. Step 3: Cross multiply
    120,147.36x = 180,103.34 × 66,864.75
  4. Step 4: Simplify right side
    120,147.36x = 12,042,564,803.27
  5. Step 5: Solve for x
    x = 12,042,564,803.27/120,147.36
  6. Step 6: Final answer
    x = 100,231.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.