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Finding the Fourth Proportional to 148,663.94, 205,156.37 and 80,680.92

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Solution

The fourth proportional to 148,663.94, 205,156.37 and 80,680.92 is: 111,339.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,663.94 : 205,156.37 = 80,680.92 : x
  2. Step 2: Convert to fraction form
    148,663.94/205,156.37 = 80,680.92/x
  3. Step 3: Cross multiply
    148,663.94x = 205,156.37 × 80,680.92
  4. Step 4: Simplify right side
    148,663.94x = 16,552,204,272.06
  5. Step 5: Solve for x
    x = 16,552,204,272.06/148,663.94
  6. Step 6: Final answer
    x = 111,339.74

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Double scale
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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.