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Finding the Fourth Proportional to 210,101.82, 315,155.46 and 69,860.44

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Solution

The fourth proportional to 210,101.82, 315,155.46 and 69,860.44 is: 104,791.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,101.82 : 315,155.46 = 69,860.44 : x
  2. Step 2: Convert to fraction form
    210,101.82/315,155.46 = 69,860.44/x
  3. Step 3: Cross multiply
    210,101.82x = 315,155.46 × 69,860.44
  4. Step 4: Simplify right side
    210,101.82x = 22,016,899,104.00
  5. Step 5: Solve for x
    x = 22,016,899,104.00/210,101.82
  6. Step 6: Final answer
    x = 104,791.57

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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.