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Finding the Fourth Proportional to 148,885.94, 205,463.90 and 80,902.91

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Solution

The fourth proportional to 148,885.94, 205,463.90 and 80,902.91 is: 111,646.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,885.94 : 205,463.90 = 80,902.91 : x
  2. Step 2: Convert to fraction form
    148,885.94/205,463.90 = 80,902.91/x
  3. Step 3: Cross multiply
    148,885.94x = 205,463.90 × 80,902.91
  4. Step 4: Simplify right side
    148,885.94x = 16,622,625,978.12
  5. Step 5: Solve for x
    x = 16,622,625,978.12/148,885.94
  6. Step 6: Final answer
    x = 111,646.72

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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.