Home / 109,806.30-164,709.45-91,107.45

Finding the Fourth Proportional to 109,806.30, 164,709.45 and 91,107.45

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Solution

The fourth proportional to 109,806.30, 164,709.45 and 91,107.45 is: 136,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,806.30 : 164,709.45 = 91,107.45 : x
  2. Step 2: Convert to fraction form
    109,806.30/164,709.45 = 91,107.45/x
  3. Step 3: Cross multiply
    109,806.30x = 164,709.45 × 91,107.45
  4. Step 4: Simplify right side
    109,806.30x = 15,006,257,980.40
  5. Step 5: Solve for x
    x = 15,006,257,980.40/109,806.30
  6. Step 6: Final answer
    x = 136,661.18

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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.