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Finding the Fourth Proportional to 121,775.81, 182,631.70 and 36,366.40

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Solution

The fourth proportional to 121,775.81, 182,631.70 and 36,366.40 is: 54,540.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,775.81 : 182,631.70 = 36,366.40 : x
  2. Step 2: Convert to fraction form
    121,775.81/182,631.70 = 36,366.40/x
  3. Step 3: Cross multiply
    121,775.81x = 182,631.70 × 36,366.40
  4. Step 4: Simplify right side
    121,775.81x = 6,641,656,359.89
  5. Step 5: Solve for x
    x = 6,641,656,359.89/121,775.81
  6. Step 6: Final answer
    x = 54,540.03

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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.