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Finding the Fourth Proportional to 150,702.49, 207,934.54 and 90,250.21

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Solution

The fourth proportional to 150,702.49, 207,934.54 and 90,250.21 is: 124,524.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,702.49 : 207,934.54 = 90,250.21 : x
  2. Step 2: Convert to fraction form
    150,702.49/207,934.54 = 90,250.21/x
  3. Step 3: Cross multiply
    150,702.49x = 207,934.54 × 90,250.21
  4. Step 4: Simplify right side
    150,702.49x = 18,766,135,901.25
  5. Step 5: Solve for x
    x = 18,766,135,901.25/150,702.49
  6. Step 6: Final answer
    x = 124,524.39

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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.