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Finding the Fourth Proportional to 140,707.60, 211,061.40 and 131,491.60

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Solution

The fourth proportional to 140,707.60, 211,061.40 and 131,491.60 is: 197,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,707.60 : 211,061.40 = 131,491.60 : x
  2. Step 2: Convert to fraction form
    140,707.60/211,061.40 = 131,491.60/x
  3. Step 3: Cross multiply
    140,707.60x = 211,061.40 × 131,491.60
  4. Step 4: Simplify right side
    140,707.60x = 27,752,801,184.24
  5. Step 5: Solve for x
    x = 27,752,801,184.24/140,707.60
  6. Step 6: Final answer
    x = 197,237.40

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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.