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Finding the Fourth Proportional to 188,783.39, 260,520.90 and 103,905.92

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Solution

The fourth proportional to 188,783.39, 260,520.90 and 103,905.92 is: 143,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,783.39 : 260,520.90 = 103,905.92 : x
  2. Step 2: Convert to fraction form
    188,783.39/260,520.90 = 103,905.92/x
  3. Step 3: Cross multiply
    188,783.39x = 260,520.90 × 103,905.92
  4. Step 4: Simplify right side
    188,783.39x = 27,069,663,793.73
  5. Step 5: Solve for x
    x = 27,069,663,793.73/188,783.39
  6. Step 6: Final answer
    x = 143,390.07

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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.