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Finding the Fourth Proportional to 121,866.30, 182,799.45 and 117,200.70

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Solution

The fourth proportional to 121,866.30, 182,799.45 and 117,200.70 is: 175,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,866.30 : 182,799.45 = 117,200.70 : x
  2. Step 2: Convert to fraction form
    121,866.30/182,799.45 = 117,200.70/x
  3. Step 3: Cross multiply
    121,866.30x = 182,799.45 × 117,200.70
  4. Step 4: Simplify right side
    121,866.30x = 21,424,223,499.62
  5. Step 5: Solve for x
    x = 21,424,223,499.62/121,866.30
  6. Step 6: Final answer
    x = 175,801.05

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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.