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Finding the Fourth Proportional to 150,021.66, 207,033.49 and 85,489.52

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Solution

The fourth proportional to 150,021.66, 207,033.49 and 85,489.52 is: 117,977.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,021.66 : 207,033.49 = 85,489.52 : x
  2. Step 2: Convert to fraction form
    150,021.66/207,033.49 = 85,489.52/x
  3. Step 3: Cross multiply
    150,021.66x = 207,033.49 × 85,489.52
  4. Step 4: Simplify right side
    150,021.66x = 17,699,193,083.39
  5. Step 5: Solve for x
    x = 17,699,193,083.39/150,021.66
  6. Step 6: Final answer
    x = 117,977.58

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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.