Home / 149,266.13-205,984.31-81,283.91

Finding the Fourth Proportional to 149,266.13, 205,984.31 and 81,283.91

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Solution

The fourth proportional to 149,266.13, 205,984.31 and 81,283.91 is: 112,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,266.13 : 205,984.31 = 81,283.91 : x
  2. Step 2: Convert to fraction form
    149,266.13/205,984.31 = 81,283.91/x
  3. Step 3: Cross multiply
    149,266.13x = 205,984.31 × 81,283.91
  4. Step 4: Simplify right side
    149,266.13x = 16,743,208,679.11
  5. Step 5: Solve for x
    x = 16,743,208,679.11/149,266.13
  6. Step 6: Final answer
    x = 112,170.18

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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.