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Finding the Fourth Proportional to 188,578.73, 260,238.65 and 103,695.80

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Solution

The fourth proportional to 188,578.73, 260,238.65 and 103,695.80 is: 143,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,578.73 : 260,238.65 = 103,695.80 : x
  2. Step 2: Convert to fraction form
    188,578.73/260,238.65 = 103,695.80/x
  3. Step 3: Cross multiply
    188,578.73x = 260,238.65 × 103,695.80
  4. Step 4: Simplify right side
    188,578.73x = 26,985,653,960.72
  5. Step 5: Solve for x
    x = 26,985,653,960.72/188,578.73
  6. Step 6: Final answer
    x = 143,100.20

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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.