Home / 83,423.12-125,133.63-20,243.78

Finding the Fourth Proportional to 83,423.12, 125,133.63 and 20,243.78

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Solution

The fourth proportional to 83,423.12, 125,133.63 and 20,243.78 is: 30,365.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,423.12 : 125,133.63 = 20,243.78 : x
  2. Step 2: Convert to fraction form
    83,423.12/125,133.63 = 20,243.78/x
  3. Step 3: Cross multiply
    83,423.12x = 125,133.63 × 20,243.78
  4. Step 4: Simplify right side
    83,423.12x = 2,533,177,050.65
  5. Step 5: Solve for x
    x = 2,533,177,050.65/83,423.12
  6. Step 6: Final answer
    x = 30,365.41

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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.