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Finding the Fourth Proportional to 188,506.27, 260,139.50 and 103,628.80

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Solution

The fourth proportional to 188,506.27, 260,139.50 and 103,628.80 is: 143,008.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,506.27 : 260,139.50 = 103,628.80 : x
  2. Step 2: Convert to fraction form
    188,506.27/260,139.50 = 103,628.80/x
  3. Step 3: Cross multiply
    188,506.27x = 260,139.50 × 103,628.80
  4. Step 4: Simplify right side
    188,506.27x = 26,957,944,217.60
  5. Step 5: Solve for x
    x = 26,957,944,217.60/188,506.27
  6. Step 6: Final answer
    x = 143,008.21

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1.5x scale

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.