Home / 115,618.18-159,549.74-64,631

Finding the Fourth Proportional to 115,618.18, 159,549.74 and 64,631

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Solution

The fourth proportional to 115,618.18, 159,549.74 and 64,631 is: 89,188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,618.18 : 159,549.74 = 64,631 : x
  2. Step 2: Convert to fraction form
    115,618.18/159,549.74 = 64,631/x
  3. Step 3: Cross multiply
    115,618.18x = 159,549.74 × 64,631
  4. Step 4: Simplify right side
    115,618.18x = 10,311,859,245.94
  5. Step 5: Solve for x
    x = 10,311,859,245.94/115,618.18
  6. Step 6: Final answer
    x = 89,188.91

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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.