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Finding the Fourth Proportional to 121,840.61, 182,318.04 and 100,582.97

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Solution

The fourth proportional to 121,840.61, 182,318.04 and 100,582.97 is: 150,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,840.61 : 182,318.04 = 100,582.97 : x
  2. Step 2: Convert to fraction form
    121,840.61/182,318.04 = 100,582.97/x
  3. Step 3: Cross multiply
    121,840.61x = 182,318.04 × 100,582.97
  4. Step 4: Simplify right side
    121,840.61x = 18,338,089,036.19
  5. Step 5: Solve for x
    x = 18,338,089,036.19/121,840.61
  6. Step 6: Final answer
    x = 150,508.85

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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.