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Finding the Fourth Proportional to 143,982.32, 216,039.12 and 73,910.88

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Solution

The fourth proportional to 143,982.32, 216,039.12 and 73,910.88 is: 110,900.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,982.32 : 216,039.12 = 73,910.88 : x
  2. Step 2: Convert to fraction form
    143,982.32/216,039.12 = 73,910.88/x
  3. Step 3: Cross multiply
    143,982.32x = 216,039.12 × 73,910.88
  4. Step 4: Simplify right side
    143,982.32x = 15,967,641,473.63
  5. Step 5: Solve for x
    x = 15,967,641,473.63/143,982.32
  6. Step 6: Final answer
    x = 110,900.02

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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.