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Finding the Fourth Proportional to 159,035.84, 219,469.94 and 87,423.20

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Solution

The fourth proportional to 159,035.84, 219,469.94 and 87,423.20 is: 120,644.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,035.84 : 219,469.94 = 87,423.20 : x
  2. Step 2: Convert to fraction form
    159,035.84/219,469.94 = 87,423.20/x
  3. Step 3: Cross multiply
    159,035.84x = 219,469.94 × 87,423.20
  4. Step 4: Simplify right side
    159,035.84x = 19,186,762,924.14
  5. Step 5: Solve for x
    x = 19,186,762,924.14/159,035.84
  6. Step 6: Final answer
    x = 120,644.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.