Home / 121,739.32-182,357.46-71,665.12

Finding the Fourth Proportional to 121,739.32, 182,357.46 and 71,665.12

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Solution

The fourth proportional to 121,739.32, 182,357.46 and 71,665.12 is: 107,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,739.32 : 182,357.46 = 71,665.12 : x
  2. Step 2: Convert to fraction form
    121,739.32/182,357.46 = 71,665.12/x
  3. Step 3: Cross multiply
    121,739.32x = 182,357.46 × 71,665.12
  4. Step 4: Simplify right side
    121,739.32x = 13,068,669,253.80
  5. Step 5: Solve for x
    x = 13,068,669,253.80/121,739.32
  6. Step 6: Final answer
    x = 107,349.62

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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.