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Finding the Fourth Proportional to 159,053.02, 219,496.31 and 87,439.71

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Solution

The fourth proportional to 159,053.02, 219,496.31 and 87,439.71 is: 120,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,053.02 : 219,496.31 = 87,439.71 : x
  2. Step 2: Convert to fraction form
    159,053.02/219,496.31 = 87,439.71/x
  3. Step 3: Cross multiply
    159,053.02x = 219,496.31 × 87,439.71
  4. Step 4: Simplify right side
    159,053.02x = 19,192,693,692.47
  5. Step 5: Solve for x
    x = 19,192,693,692.47/159,053.02
  6. Step 6: Final answer
    x = 120,668.53

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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.