Home / 217,575.92-326,139.38-91,289.50

Finding the Fourth Proportional to 217,575.92, 326,139.38 and 91,289.50

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Solution

The fourth proportional to 217,575.92, 326,139.38 and 91,289.50 is: 136,840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,575.92 : 326,139.38 = 91,289.50 : x
  2. Step 2: Convert to fraction form
    217,575.92/326,139.38 = 91,289.50/x
  3. Step 3: Cross multiply
    217,575.92x = 326,139.38 × 91,289.50
  4. Step 4: Simplify right side
    217,575.92x = 29,773,100,001.05
  5. Step 5: Solve for x
    x = 29,773,100,001.05/217,575.92
  6. Step 6: Final answer
    x = 136,840.05

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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.