Home / 115,747.05-159,730.06-65,447.85

Finding the Fourth Proportional to 115,747.05, 159,730.06 and 65,447.85

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Solution

The fourth proportional to 115,747.05, 159,730.06 and 65,447.85 is: 90,317.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,747.05 : 159,730.06 = 65,447.85 : x
  2. Step 2: Convert to fraction form
    115,747.05/159,730.06 = 65,447.85/x
  3. Step 3: Cross multiply
    115,747.05x = 159,730.06 × 65,447.85
  4. Step 4: Simplify right side
    115,747.05x = 10,453,989,007.37
  5. Step 5: Solve for x
    x = 10,453,989,007.37/115,747.05
  6. Step 6: Final answer
    x = 90,317.54

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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.