Home / 149,220.63-205,922.40-81,238.17

Finding the Fourth Proportional to 149,220.63, 205,922.40 and 81,238.17

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Solution

The fourth proportional to 149,220.63, 205,922.40 and 81,238.17 is: 112,107.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,220.63 : 205,922.40 = 81,238.17 : x
  2. Step 2: Convert to fraction form
    149,220.63/205,922.40 = 81,238.17/x
  3. Step 3: Cross multiply
    149,220.63x = 205,922.40 × 81,238.17
  4. Step 4: Simplify right side
    149,220.63x = 16,728,758,938.01
  5. Step 5: Solve for x
    x = 16,728,758,938.01/149,220.63
  6. Step 6: Final answer
    x = 112,107.55

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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.