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Finding the Fourth Proportional to 140,363.20, 210,544.80 and 109,028.80

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Solution

The fourth proportional to 140,363.20, 210,544.80 and 109,028.80 is: 163,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,363.20 : 210,544.80 = 109,028.80 : x
  2. Step 2: Convert to fraction form
    140,363.20/210,544.80 = 109,028.80/x
  3. Step 3: Cross multiply
    140,363.20x = 210,544.80 × 109,028.80
  4. Step 4: Simplify right side
    140,363.20x = 22,955,446,890.24
  5. Step 5: Solve for x
    x = 22,955,446,890.24/140,363.20
  6. Step 6: Final answer
    x = 163,543.20

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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.