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Finding the Fourth Proportional to 115,477.28, 159,351.12 and 65,169.44

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Solution

The fourth proportional to 115,477.28, 159,351.12 and 65,169.44 is: 89,929.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,477.28 : 159,351.12 = 65,169.44 : x
  2. Step 2: Convert to fraction form
    115,477.28/159,351.12 = 65,169.44/x
  3. Step 3: Cross multiply
    115,477.28x = 159,351.12 × 65,169.44
  4. Step 4: Simplify right side
    115,477.28x = 10,384,823,253.77
  5. Step 5: Solve for x
    x = 10,384,823,253.77/115,477.28
  6. Step 6: Final answer
    x = 89,929.58

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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.