Home / 196,019.76-270,494.80-115,431.72

Finding the Fourth Proportional to 196,019.76, 270,494.80 and 115,431.72

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Solution

The fourth proportional to 196,019.76, 270,494.80 and 115,431.72 is: 159,288.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,019.76 : 270,494.80 = 115,431.72 : x
  2. Step 2: Convert to fraction form
    196,019.76/270,494.80 = 115,431.72/x
  3. Step 3: Cross multiply
    196,019.76x = 270,494.80 × 115,431.72
  4. Step 4: Simplify right side
    196,019.76x = 31,223,680,015.06
  5. Step 5: Solve for x
    x = 31,223,680,015.06/196,019.76
  6. Step 6: Final answer
    x = 159,288.43

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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.