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Finding the Fourth Proportional to 134,234.40, 201,121.20 and 87,463.20

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Solution

The fourth proportional to 134,234.40, 201,121.20 and 87,463.20 is: 131,044.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,234.40 : 201,121.20 = 87,463.20 : x
  2. Step 2: Convert to fraction form
    134,234.40/201,121.20 = 87,463.20/x
  3. Step 3: Cross multiply
    134,234.40x = 201,121.20 × 87,463.20
  4. Step 4: Simplify right side
    134,234.40x = 17,590,703,739.84
  5. Step 5: Solve for x
    x = 17,590,703,739.84/134,234.40
  6. Step 6: Final answer
    x = 131,044.68

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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.