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Finding the Fourth Proportional to 103,499.65, 155,249.48 and 84,800.80

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Solution

The fourth proportional to 103,499.65, 155,249.48 and 84,800.80 is: 127,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,499.65 : 155,249.48 = 84,800.80 : x
  2. Step 2: Convert to fraction form
    103,499.65/155,249.48 = 84,800.80/x
  3. Step 3: Cross multiply
    103,499.65x = 155,249.48 × 84,800.80
  4. Step 4: Simplify right side
    103,499.65x = 13,165,280,103.58
  5. Step 5: Solve for x
    x = 13,165,280,103.58/103,499.65
  6. Step 6: Final answer
    x = 127,201.20

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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.