Home / 106,213.78-159,305.29-31,330.22

Finding the Fourth Proportional to 106,213.78, 159,305.29 and 31,330.22

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Solution

The fourth proportional to 106,213.78, 159,305.29 and 31,330.22 is: 46,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,213.78 : 159,305.29 = 31,330.22 : x
  2. Step 2: Convert to fraction form
    106,213.78/159,305.29 = 31,330.22/x
  3. Step 3: Cross multiply
    106,213.78x = 159,305.29 × 31,330.22
  4. Step 4: Simplify right side
    106,213.78x = 4,991,069,782.86
  5. Step 5: Solve for x
    x = 4,991,069,782.86/106,213.78
  6. Step 6: Final answer
    x = 46,990.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.