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Finding the Fourth Proportional to 159,486.98, 220,083.89 and 87,865.56

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Solution

The fourth proportional to 159,486.98, 220,083.89 and 87,865.56 is: 121,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,486.98 : 220,083.89 = 87,865.56 : x
  2. Step 2: Convert to fraction form
    159,486.98/220,083.89 = 87,865.56/x
  3. Step 3: Cross multiply
    159,486.98x = 220,083.89 × 87,865.56
  4. Step 4: Simplify right side
    159,486.98x = 19,337,793,802.50
  5. Step 5: Solve for x
    x = 19,337,793,802.50/159,486.98
  6. Step 6: Final answer
    x = 121,249.99

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1.5x scale

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.