Home / 149,016.36-205,671.78-85,396.80

Finding the Fourth Proportional to 149,016.36, 205,671.78 and 85,396.80

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Solution

The fourth proportional to 149,016.36, 205,671.78 and 85,396.80 is: 117,864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,016.36 : 205,671.78 = 85,396.80 : x
  2. Step 2: Convert to fraction form
    149,016.36/205,671.78 = 85,396.80/x
  3. Step 3: Cross multiply
    149,016.36x = 205,671.78 × 85,396.80
  4. Step 4: Simplify right side
    149,016.36x = 17,563,711,862.30
  5. Step 5: Solve for x
    x = 17,563,711,862.30/149,016.36
  6. Step 6: Final answer
    x = 117,864.32

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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.