Home / 115,678.20-159,639.19-64,692.85

Finding the Fourth Proportional to 115,678.20, 159,639.19 and 64,692.85

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Solution

The fourth proportional to 115,678.20, 159,639.19 and 64,692.85 is: 89,277.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,678.20 : 159,639.19 = 64,692.85 : x
  2. Step 2: Convert to fraction form
    115,678.20/159,639.19 = 64,692.85/x
  3. Step 3: Cross multiply
    115,678.20x = 159,639.19 × 64,692.85
  4. Step 4: Simplify right side
    115,678.20x = 10,327,514,172.79
  5. Step 5: Solve for x
    x = 10,327,514,172.79/115,678.20
  6. Step 6: Final answer
    x = 89,277.96

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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.