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Finding the Fourth Proportional to 121,609.58, 182,405.37 and 42,724.58

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Solution

The fourth proportional to 121,609.58, 182,405.37 and 42,724.58 is: 64,083.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,609.58 : 182,405.37 = 42,724.58 : x
  2. Step 2: Convert to fraction form
    121,609.58/182,405.37 = 42,724.58/x
  3. Step 3: Cross multiply
    121,609.58x = 182,405.37 × 42,724.58
  4. Step 4: Simplify right side
    121,609.58x = 7,793,192,822.99
  5. Step 5: Solve for x
    x = 7,793,192,822.99/121,609.58
  6. Step 6: Final answer
    x = 64,083.71

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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.