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Finding the Fourth Proportional to 186,010.48, 278,851.56 and 67,661.11

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Solution

The fourth proportional to 186,010.48, 278,851.56 and 67,661.11 is: 101,431.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,010.48 : 278,851.56 = 67,661.11 : x
  2. Step 2: Convert to fraction form
    186,010.48/278,851.56 = 67,661.11/x
  3. Step 3: Cross multiply
    186,010.48x = 278,851.56 × 67,661.11
  4. Step 4: Simplify right side
    186,010.48x = 18,867,406,074.83
  5. Step 5: Solve for x
    x = 18,867,406,074.83/186,010.48
  6. Step 6: Final answer
    x = 101,431.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.