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Finding the Fourth Proportional to 150,689.52, 207,958.05 and 90,270

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Solution

The fourth proportional to 150,689.52, 207,958.05 and 90,270 is: 124,576.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,689.52 : 207,958.05 = 90,270 : x
  2. Step 2: Convert to fraction form
    150,689.52/207,958.05 = 90,270/x
  3. Step 3: Cross multiply
    150,689.52x = 207,958.05 × 90,270
  4. Step 4: Simplify right side
    150,689.52x = 18,772,373,173.50
  5. Step 5: Solve for x
    x = 18,772,373,173.50/150,689.52
  6. Step 6: Final answer
    x = 124,576.50

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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.