Home / 149,605.25-206,448.03-81,618.17

Finding the Fourth Proportional to 149,605.25, 206,448.03 and 81,618.17

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Solution

The fourth proportional to 149,605.25, 206,448.03 and 81,618.17 is: 112,629.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,605.25 : 206,448.03 = 81,618.17 : x
  2. Step 2: Convert to fraction form
    149,605.25/206,448.03 = 81,618.17/x
  3. Step 3: Cross multiply
    149,605.25x = 206,448.03 × 81,618.17
  4. Step 4: Simplify right side
    149,605.25x = 16,849,910,408.71
  5. Step 5: Solve for x
    x = 16,849,910,408.71/149,605.25
  6. Step 6: Final answer
    x = 112,629.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.