Home / 217,643.20-326,078.66-91,004.36

Finding the Fourth Proportional to 217,643.20, 326,078.66 and 91,004.36

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Solution

The fourth proportional to 217,643.20, 326,078.66 and 91,004.36 is: 136,345.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,643.20 : 326,078.66 = 91,004.36 : x
  2. Step 2: Convert to fraction form
    217,643.20/326,078.66 = 91,004.36/x
  3. Step 3: Cross multiply
    217,643.20x = 326,078.66 × 91,004.36
  4. Step 4: Simplify right side
    217,643.20x = 29,674,578,360.08
  5. Step 5: Solve for x
    x = 29,674,578,360.08/217,643.20
  6. Step 6: Final answer
    x = 136,345.08

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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.