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Finding the Fourth Proportional to 150,766.84, 208,042.80 and 87,125.12

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Solution

The fourth proportional to 150,766.84, 208,042.80 and 87,125.12 is: 120,223.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,766.84 : 208,042.80 = 87,125.12 : x
  2. Step 2: Convert to fraction form
    150,766.84/208,042.80 = 87,125.12/x
  3. Step 3: Cross multiply
    150,766.84x = 208,042.80 × 87,125.12
  4. Step 4: Simplify right side
    150,766.84x = 18,125,753,915.14
  5. Step 5: Solve for x
    x = 18,125,753,915.14/150,766.84
  6. Step 6: Final answer
    x = 120,223.74

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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.