Home / 217,345.68-326,072.52-77,118.48

Finding the Fourth Proportional to 217,345.68, 326,072.52 and 77,118.48

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Solution

The fourth proportional to 217,345.68, 326,072.52 and 77,118.48 is: 115,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,345.68 : 326,072.52 = 77,118.48 : x
  2. Step 2: Convert to fraction form
    217,345.68/326,072.52 = 77,118.48/x
  3. Step 3: Cross multiply
    217,345.68x = 326,072.52 × 77,118.48
  4. Step 4: Simplify right side
    217,345.68x = 25,146,217,112.17
  5. Step 5: Solve for x
    x = 25,146,217,112.17/217,345.68
  6. Step 6: Final answer
    x = 115,696.88

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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.