Home / 217,531.18-326,233.64-91,168.12

Finding the Fourth Proportional to 217,531.18, 326,233.64 and 91,168.12

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Solution

The fourth proportional to 217,531.18, 326,233.64 and 91,168.12 is: 136,725.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,531.18 : 326,233.64 = 91,168.12 : x
  2. Step 2: Convert to fraction form
    217,531.18/326,233.64 = 91,168.12/x
  3. Step 3: Cross multiply
    217,531.18x = 326,233.64 × 91,168.12
  4. Step 4: Simplify right side
    217,531.18x = 29,742,107,639.56
  5. Step 5: Solve for x
    x = 29,742,107,639.56/217,531.18
  6. Step 6: Final answer
    x = 136,725.72

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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.