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Finding the Fourth Proportional to 144,879.90, 216,801.45 and 132,438.30

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Solution

The fourth proportional to 144,879.90, 216,801.45 and 132,438.30 is: 198,183.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,879.90 : 216,801.45 = 132,438.30 : x
  2. Step 2: Convert to fraction form
    144,879.90/216,801.45 = 132,438.30/x
  3. Step 3: Cross multiply
    144,879.90x = 216,801.45 × 132,438.30
  4. Step 4: Simplify right side
    144,879.90x = 28,712,815,475.54
  5. Step 5: Solve for x
    x = 28,712,815,475.54/144,879.90
  6. Step 6: Final answer
    x = 198,183.57

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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.