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Finding the Fourth Proportional to 185,994.50, 278,985.51 and 80,813.43

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Solution

The fourth proportional to 185,994.50, 278,985.51 and 80,813.43 is: 121,217.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,994.50 : 278,985.51 = 80,813.43 : x
  2. Step 2: Convert to fraction form
    185,994.50/278,985.51 = 80,813.43/x
  3. Step 3: Cross multiply
    185,994.50x = 278,985.51 × 80,813.43
  4. Step 4: Simplify right side
    185,994.50x = 22,545,775,983.40
  5. Step 5: Solve for x
    x = 22,545,775,983.40/185,994.50
  6. Step 6: Final answer
    x = 121,217.44

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1.5x scale

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.