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Finding the Fourth Proportional to 188,872.35, 260,769.42 and 145,187.48

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Solution

The fourth proportional to 188,872.35, 260,769.42 and 145,187.48 is: 200,455.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,872.35 : 260,769.42 = 145,187.48 : x
  2. Step 2: Convert to fraction form
    188,872.35/260,769.42 = 145,187.48/x
  3. Step 3: Cross multiply
    188,872.35x = 260,769.42 × 145,187.48
  4. Step 4: Simplify right side
    188,872.35x = 37,860,455,602.79
  5. Step 5: Solve for x
    x = 37,860,455,602.79/188,872.35
  6. Step 6: Final answer
    x = 200,455.26

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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.