Home / 207,849.20-312,004.20-129,052.40

Finding the Fourth Proportional to 207,849.20, 312,004.20 and 129,052.40

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Solution

The fourth proportional to 207,849.20, 312,004.20 and 129,052.40 is: 193,721.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,849.20 : 312,004.20 = 129,052.40 : x
  2. Step 2: Convert to fraction form
    207,849.20/312,004.20 = 129,052.40/x
  3. Step 3: Cross multiply
    207,849.20x = 312,004.20 × 129,052.40
  4. Step 4: Simplify right side
    207,849.20x = 40,264,890,820.08
  5. Step 5: Solve for x
    x = 40,264,890,820.08/207,849.20
  6. Step 6: Final answer
    x = 193,721.65

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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.