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Finding the Fourth Proportional to 121,056.56, 181,583.36 and 54,449.65

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Solution

The fourth proportional to 121,056.56, 181,583.36 and 54,449.65 is: 81,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,056.56 : 181,583.36 = 54,449.65 : x
  2. Step 2: Convert to fraction form
    121,056.56/181,583.36 = 54,449.65/x
  3. Step 3: Cross multiply
    121,056.56x = 181,583.36 × 54,449.65
  4. Step 4: Simplify right side
    121,056.56x = 9,887,150,397.82
  5. Step 5: Solve for x
    x = 9,887,150,397.82/121,056.56
  6. Step 6: Final answer
    x = 81,673.81

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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.