Home / 192,538.20-288,687-74,068.40

Finding the Fourth Proportional to 192,538.20, 288,687 and 74,068.40

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Solution

The fourth proportional to 192,538.20, 288,687 and 74,068.40 is: 111,056.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,538.20 : 288,687 = 74,068.40 : x
  2. Step 2: Convert to fraction form
    192,538.20/288,687 = 74,068.40/x
  3. Step 3: Cross multiply
    192,538.20x = 288,687 × 74,068.40
  4. Step 4: Simplify right side
    192,538.20x = 21,382,584,190.80
  5. Step 5: Solve for x
    x = 21,382,584,190.80/192,538.20
  6. Step 6: Final answer
    x = 111,056.32

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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.