Home / 149,056.40-205,727.04-85,436.80

Finding the Fourth Proportional to 149,056.40, 205,727.04 and 85,436.80

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Solution

The fourth proportional to 149,056.40, 205,727.04 and 85,436.80 is: 117,919.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,056.40 : 205,727.04 = 85,436.80 : x
  2. Step 2: Convert to fraction form
    149,056.40/205,727.04 = 85,436.80/x
  3. Step 3: Cross multiply
    149,056.40x = 205,727.04 × 85,436.80
  4. Step 4: Simplify right side
    149,056.40x = 17,576,659,971.07
  5. Step 5: Solve for x
    x = 17,576,659,971.07/149,056.40
  6. Step 6: Final answer
    x = 117,919.53

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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.