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Finding the Fourth Proportional to 140,744.70, 211,130.91 and 40,905.77

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Solution

The fourth proportional to 140,744.70, 211,130.91 and 40,905.77 is: 61,362.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,744.70 : 211,130.91 = 40,905.77 : x
  2. Step 2: Convert to fraction form
    140,744.70/211,130.91 = 40,905.77/x
  3. Step 3: Cross multiply
    140,744.70x = 211,130.91 × 40,905.77
  4. Step 4: Simplify right side
    140,744.70x = 8,636,471,388.70
  5. Step 5: Solve for x
    x = 8,636,471,388.70/140,744.70
  6. Step 6: Final answer
    x = 61,362.68

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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.