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Finding the Fourth Proportional to 140,046.40, 210,069.60 and 108,553.60

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Solution

The fourth proportional to 140,046.40, 210,069.60 and 108,553.60 is: 162,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,046.40 : 210,069.60 = 108,553.60 : x
  2. Step 2: Convert to fraction form
    140,046.40/210,069.60 = 108,553.60/x
  3. Step 3: Cross multiply
    140,046.40x = 210,069.60 × 108,553.60
  4. Step 4: Simplify right side
    140,046.40x = 22,803,811,330.56
  5. Step 5: Solve for x
    x = 22,803,811,330.56/140,046.40
  6. Step 6: Final answer
    x = 162,830.40

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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.