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Finding the Fourth Proportional to 159,101, 219,553.76 and 87,480.52

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Solution

The fourth proportional to 159,101, 219,553.76 and 87,480.52 is: 120,720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,101 : 219,553.76 = 87,480.52 : x
  2. Step 2: Convert to fraction form
    159,101/219,553.76 = 87,480.52/x
  3. Step 3: Cross multiply
    159,101x = 219,553.76 × 87,480.52
  4. Step 4: Simplify right side
    159,101x = 19,206,677,092.76
  5. Step 5: Solve for x
    x = 19,206,677,092.76/159,101
  6. Step 6: Final answer
    x = 120,720.03

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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.