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Finding the Fourth Proportional to 185,132.79, 277,641.74 and 66,788.69

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Solution

The fourth proportional to 185,132.79, 277,641.74 and 66,788.69 is: 100,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,132.79 : 277,641.74 = 66,788.69 : x
  2. Step 2: Convert to fraction form
    185,132.79/277,641.74 = 66,788.69/x
  3. Step 3: Cross multiply
    185,132.79x = 277,641.74 × 66,788.69
  4. Step 4: Simplify right side
    185,132.79x = 18,543,326,882.68
  5. Step 5: Solve for x
    x = 18,543,326,882.68/185,132.79
  6. Step 6: Final answer
    x = 100,162.30

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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.