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Finding the Fourth Proportional to 159,166.42, 219,649.77 and 87,551.89

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Solution

The fourth proportional to 159,166.42, 219,649.77 and 87,551.89 is: 120,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,166.42 : 219,649.77 = 87,551.89 : x
  2. Step 2: Convert to fraction form
    159,166.42/219,649.77 = 87,551.89/x
  3. Step 3: Cross multiply
    159,166.42x = 219,649.77 × 87,551.89
  4. Step 4: Simplify right side
    159,166.42x = 19,230,752,501.57
  5. Step 5: Solve for x
    x = 19,230,752,501.57/159,166.42
  6. Step 6: Final answer
    x = 120,821.67

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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.