Home / 170,926.20-255,891-99,630.72

Finding the Fourth Proportional to 170,926.20, 255,891 and 99,630.72

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Solution

The fourth proportional to 170,926.20, 255,891 and 99,630.72 is: 149,155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,926.20 : 255,891 = 99,630.72 : x
  2. Step 2: Convert to fraction form
    170,926.20/255,891 = 99,630.72/x
  3. Step 3: Cross multiply
    170,926.20x = 255,891 × 99,630.72
  4. Step 4: Simplify right side
    170,926.20x = 25,494,604,571.52
  5. Step 5: Solve for x
    x = 25,494,604,571.52/170,926.20
  6. Step 6: Final answer
    x = 149,155.63

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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.