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Finding the Fourth Proportional to 120,873.52, 181,314.84 and 45,979.64

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Solution

The fourth proportional to 120,873.52, 181,314.84 and 45,979.64 is: 68,971.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,873.52 : 181,314.84 = 45,979.64 : x
  2. Step 2: Convert to fraction form
    120,873.52/181,314.84 = 45,979.64/x
  3. Step 3: Cross multiply
    120,873.52x = 181,314.84 × 45,979.64
  4. Step 4: Simplify right side
    120,873.52x = 8,336,791,069.86
  5. Step 5: Solve for x
    x = 8,336,791,069.86/120,873.52
  6. Step 6: Final answer
    x = 68,971.19

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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.