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Finding the Fourth Proportional to 201,950.80, 278,712.84 and 121,404.40

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Solution

The fourth proportional to 201,950.80, 278,712.84 and 121,404.40 is: 167,550.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,950.80 : 278,712.84 = 121,404.40 : x
  2. Step 2: Convert to fraction form
    201,950.80/278,712.84 = 121,404.40/x
  3. Step 3: Cross multiply
    201,950.80x = 278,712.84 × 121,404.40
  4. Step 4: Simplify right side
    201,950.80x = 33,836,965,112.50
  5. Step 5: Solve for x
    x = 33,836,965,112.50/201,950.80
  6. Step 6: Final answer
    x = 167,550.54

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1.5x scale

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.