Home / 129,255.40-193,882.74-40,509.28

Finding the Fourth Proportional to 129,255.40, 193,882.74 and 40,509.28

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Solution

The fourth proportional to 129,255.40, 193,882.74 and 40,509.28 is: 60,763.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,255.40 : 193,882.74 = 40,509.28 : x
  2. Step 2: Convert to fraction form
    129,255.40/193,882.74 = 40,509.28/x
  3. Step 3: Cross multiply
    129,255.40x = 193,882.74 × 40,509.28
  4. Step 4: Simplify right side
    129,255.40x = 7,854,050,201.83
  5. Step 5: Solve for x
    x = 7,854,050,201.83/129,255.40
  6. Step 6: Final answer
    x = 60,763.81

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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.