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Finding the Fourth Proportional to 121,145.95, 181,744.80 and 36,912.83

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Solution

The fourth proportional to 121,145.95, 181,744.80 and 36,912.83 is: 55,377.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,145.95 : 181,744.80 = 36,912.83 : x
  2. Step 2: Convert to fraction form
    121,145.95/181,744.80 = 36,912.83/x
  3. Step 3: Cross multiply
    121,145.95x = 181,744.80 × 36,912.83
  4. Step 4: Simplify right side
    121,145.95x = 6,708,714,114.22
  5. Step 5: Solve for x
    x = 6,708,714,114.22/121,145.95
  6. Step 6: Final answer
    x = 55,377.12

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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.