Home / 109,275.12-163,912.86-30,389.40

Finding the Fourth Proportional to 109,275.12, 163,912.86 and 30,389.40

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Solution

The fourth proportional to 109,275.12, 163,912.86 and 30,389.40 is: 45,584.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,275.12 : 163,912.86 = 30,389.40 : x
  2. Step 2: Convert to fraction form
    109,275.12/163,912.86 = 30,389.40/x
  3. Step 3: Cross multiply
    109,275.12x = 163,912.86 × 30,389.40
  4. Step 4: Simplify right side
    109,275.12x = 4,981,213,467.68
  5. Step 5: Solve for x
    x = 4,981,213,467.68/109,275.12
  6. Step 6: Final answer
    x = 45,584.15

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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.