Home / 204,526.80-306,742.50-78,121.08

Finding the Fourth Proportional to 204,526.80, 306,742.50 and 78,121.08

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Solution

The fourth proportional to 204,526.80, 306,742.50 and 78,121.08 is: 117,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,526.80 : 306,742.50 = 78,121.08 : x
  2. Step 2: Convert to fraction form
    204,526.80/306,742.50 = 78,121.08/x
  3. Step 3: Cross multiply
    204,526.80x = 306,742.50 × 78,121.08
  4. Step 4: Simplify right side
    204,526.80x = 23,963,055,381.90
  5. Step 5: Solve for x
    x = 23,963,055,381.90/204,526.80
  6. Step 6: Final answer
    x = 117,163.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.