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Finding the Fourth Proportional to 140,490.39, 210,737.57 and 45,721.07

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Solution

The fourth proportional to 140,490.39, 210,737.57 and 45,721.07 is: 68,582.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,490.39 : 210,737.57 = 45,721.07 : x
  2. Step 2: Convert to fraction form
    140,490.39/210,737.57 = 45,721.07/x
  3. Step 3: Cross multiply
    140,490.39x = 210,737.57 × 45,721.07
  4. Step 4: Simplify right side
    140,490.39x = 9,635,147,189.60
  5. Step 5: Solve for x
    x = 9,635,147,189.60/140,490.39
  6. Step 6: Final answer
    x = 68,582.25

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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.