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Finding the Fourth Proportional to 140,143.20, 210,214.80 and 41,647.20

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Solution

The fourth proportional to 140,143.20, 210,214.80 and 41,647.20 is: 62,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,143.20 : 210,214.80 = 41,647.20 : x
  2. Step 2: Convert to fraction form
    140,143.20/210,214.80 = 41,647.20/x
  3. Step 3: Cross multiply
    140,143.20x = 210,214.80 × 41,647.20
  4. Step 4: Simplify right side
    140,143.20x = 8,754,857,818.56
  5. Step 5: Solve for x
    x = 8,754,857,818.56/140,143.20
  6. Step 6: Final answer
    x = 62,470.80

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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.