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Finding the Fourth Proportional to 150,098.39, 207,107.21 and 85,564.80

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Solution

The fourth proportional to 150,098.39, 207,107.21 and 85,564.80 is: 118,063.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,098.39 : 207,107.21 = 85,564.80 : x
  2. Step 2: Convert to fraction form
    150,098.39/207,107.21 = 85,564.80/x
  3. Step 3: Cross multiply
    150,098.39x = 207,107.21 × 85,564.80
  4. Step 4: Simplify right side
    150,098.39x = 17,721,086,574.38
  5. Step 5: Solve for x
    x = 17,721,086,574.38/150,098.39
  6. Step 6: Final answer
    x = 118,063.14

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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.