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Finding the Fourth Proportional to 140,549.40, 210,751.20 and 51,757.20

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Solution

The fourth proportional to 140,549.40, 210,751.20 and 51,757.20 is: 77,608.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,549.40 : 210,751.20 = 51,757.20 : x
  2. Step 2: Convert to fraction form
    140,549.40/210,751.20 = 51,757.20/x
  3. Step 3: Cross multiply
    140,549.40x = 210,751.20 × 51,757.20
  4. Step 4: Simplify right side
    140,549.40x = 10,907,892,008.64
  5. Step 5: Solve for x
    x = 10,907,892,008.64/140,549.40
  6. Step 6: Final answer
    x = 77,608.95

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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.