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Finding the Fourth Proportional to 121,283.30, 181,924.95 and 91,540.10

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Solution

The fourth proportional to 121,283.30, 181,924.95 and 91,540.10 is: 137,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,283.30 : 181,924.95 = 91,540.10 : x
  2. Step 2: Convert to fraction form
    121,283.30/181,924.95 = 91,540.10/x
  3. Step 3: Cross multiply
    121,283.30x = 181,924.95 × 91,540.10
  4. Step 4: Simplify right side
    121,283.30x = 16,653,428,115.50
  5. Step 5: Solve for x
    x = 16,653,428,115.50/121,283.30
  6. Step 6: Final answer
    x = 137,310.15

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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.