Home / 111,621.40-167,432.10-74,231.80

Finding the Fourth Proportional to 111,621.40, 167,432.10 and 74,231.80

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Solution

The fourth proportional to 111,621.40, 167,432.10 and 74,231.80 is: 111,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,621.40 : 167,432.10 = 74,231.80 : x
  2. Step 2: Convert to fraction form
    111,621.40/167,432.10 = 74,231.80/x
  3. Step 3: Cross multiply
    111,621.40x = 167,432.10 × 74,231.80
  4. Step 4: Simplify right side
    111,621.40x = 12,428,786,160.78
  5. Step 5: Solve for x
    x = 12,428,786,160.78/111,621.40
  6. Step 6: Final answer
    x = 111,347.70

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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.