Home / 115,424.28-159,285.66-65,127.96

Finding the Fourth Proportional to 115,424.28, 159,285.66 and 65,127.96

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Solution

The fourth proportional to 115,424.28, 159,285.66 and 65,127.96 is: 89,876.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,424.28 : 159,285.66 = 65,127.96 : x
  2. Step 2: Convert to fraction form
    115,424.28/159,285.66 = 65,127.96/x
  3. Step 3: Cross multiply
    115,424.28x = 159,285.66 × 65,127.96
  4. Step 4: Simplify right side
    115,424.28x = 10,373,950,093.05
  5. Step 5: Solve for x
    x = 10,373,950,093.05/115,424.28
  6. Step 6: Final answer
    x = 89,876.67

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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.