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Finding the Fourth Proportional to 188,388.56, 260,020.86 and 107,862.42

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Solution

The fourth proportional to 188,388.56, 260,020.86 and 107,862.42 is: 148,875.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,388.56 : 260,020.86 = 107,862.42 : x
  2. Step 2: Convert to fraction form
    188,388.56/260,020.86 = 107,862.42/x
  3. Step 3: Cross multiply
    188,388.56x = 260,020.86 × 107,862.42
  4. Step 4: Simplify right side
    188,388.56x = 28,046,479,210.08
  5. Step 5: Solve for x
    x = 28,046,479,210.08/188,388.56
  6. Step 6: Final answer
    x = 148,875.70

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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.