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Finding the Fourth Proportional to 177,326.50, 266,039.75 and 72,220.90

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Solution

The fourth proportional to 177,326.50, 266,039.75 and 72,220.90 is: 108,351.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,326.50 : 266,039.75 = 72,220.90 : x
  2. Step 2: Convert to fraction form
    177,326.50/266,039.75 = 72,220.90/x
  3. Step 3: Cross multiply
    177,326.50x = 266,039.75 × 72,220.90
  4. Step 4: Simplify right side
    177,326.50x = 19,213,630,180.78
  5. Step 5: Solve for x
    x = 19,213,630,180.78/177,326.50
  6. Step 6: Final answer
    x = 108,351.71

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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.