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Finding the Fourth Proportional to 120,872.96, 181,242.88 and 41,980.80

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Solution

The fourth proportional to 120,872.96, 181,242.88 and 41,980.80 is: 62,948.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,872.96 : 181,242.88 = 41,980.80 : x
  2. Step 2: Convert to fraction form
    120,872.96/181,242.88 = 41,980.80/x
  3. Step 3: Cross multiply
    120,872.96x = 181,242.88 × 41,980.80
  4. Step 4: Simplify right side
    120,872.96x = 7,608,721,096.70
  5. Step 5: Solve for x
    x = 7,608,721,096.70/120,872.96
  6. Step 6: Final answer
    x = 62,948.08

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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.