Home / 115,121.45-171,837.86-106,678.76

Finding the Fourth Proportional to 115,121.45, 171,837.86 and 106,678.76

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Solution

The fourth proportional to 115,121.45, 171,837.86 and 106,678.76 is: 159,235.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,121.45 : 171,837.86 = 106,678.76 : x
  2. Step 2: Convert to fraction form
    115,121.45/171,837.86 = 106,678.76/x
  3. Step 3: Cross multiply
    115,121.45x = 171,837.86 × 106,678.76
  4. Step 4: Simplify right side
    115,121.45x = 18,331,448,433.27
  5. Step 5: Solve for x
    x = 18,331,448,433.27/115,121.45
  6. Step 6: Final answer
    x = 159,235.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.