Home / 115,371.92-159,151.56-79,579.64

Finding the Fourth Proportional to 115,371.92, 159,151.56 and 79,579.64

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Solution

The fourth proportional to 115,371.92, 159,151.56 and 79,579.64 is: 109,777.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,371.92 : 159,151.56 = 79,579.64 : x
  2. Step 2: Convert to fraction form
    115,371.92/159,151.56 = 79,579.64/x
  3. Step 3: Cross multiply
    115,371.92x = 159,151.56 × 79,579.64
  4. Step 4: Simplify right side
    115,371.92x = 12,665,223,850.24
  5. Step 5: Solve for x
    x = 12,665,223,850.24/115,371.92
  6. Step 6: Final answer
    x = 109,777.35

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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.