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Finding the Fourth Proportional to 150,456.78, 207,630.36 and 90,029.94

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Solution

The fourth proportional to 150,456.78, 207,630.36 and 90,029.94 is: 124,241.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,456.78 : 207,630.36 = 90,029.94 : x
  2. Step 2: Convert to fraction form
    150,456.78/207,630.36 = 90,029.94/x
  3. Step 3: Cross multiply
    150,456.78x = 207,630.36 × 90,029.94
  4. Step 4: Simplify right side
    150,456.78x = 18,692,948,852.98
  5. Step 5: Solve for x
    x = 18,692,948,852.98/150,456.78
  6. Step 6: Final answer
    x = 124,241.32

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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.