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Finding the Fourth Proportional to 144,348.74, 216,449.16 and 76,919.21

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Solution

The fourth proportional to 144,348.74, 216,449.16 and 76,919.21 is: 115,339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,348.74 : 216,449.16 = 76,919.21 : x
  2. Step 2: Convert to fraction form
    144,348.74/216,449.16 = 76,919.21/x
  3. Step 3: Cross multiply
    144,348.74x = 216,449.16 × 76,919.21
  4. Step 4: Simplify right side
    144,348.74x = 16,649,097,310.12
  5. Step 5: Solve for x
    x = 16,649,097,310.12/144,348.74
  6. Step 6: Final answer
    x = 115,339.41

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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.