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Finding the Fourth Proportional to 144,627.20, 216,973.20 and 55,872.80

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Solution

The fourth proportional to 144,627.20, 216,973.20 and 55,872.80 is: 83,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,627.20 : 216,973.20 = 55,872.80 : x
  2. Step 2: Convert to fraction form
    144,627.20/216,973.20 = 55,872.80/x
  3. Step 3: Cross multiply
    144,627.20x = 216,973.20 × 55,872.80
  4. Step 4: Simplify right side
    144,627.20x = 12,122,900,208.96
  5. Step 5: Solve for x
    x = 12,122,900,208.96/144,627.20
  6. Step 6: Final answer
    x = 83,821.72

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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.