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Finding the Fourth Proportional to 188,431.80, 282,647.70 and 108,715.65

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Solution

The fourth proportional to 188,431.80, 282,647.70 and 108,715.65 is: 163,073.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,431.80 : 282,647.70 = 108,715.65 : x
  2. Step 2: Convert to fraction form
    188,431.80/282,647.70 = 108,715.65/x
  3. Step 3: Cross multiply
    188,431.80x = 282,647.70 × 108,715.65
  4. Step 4: Simplify right side
    188,431.80x = 30,728,228,426.51
  5. Step 5: Solve for x
    x = 30,728,228,426.51/188,431.80
  6. Step 6: Final answer
    x = 163,073.48

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1.5x scale

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.