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Finding the Fourth Proportional to 148,843.86, 205,403.71 and 80,860.30

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Solution

The fourth proportional to 148,843.86, 205,403.71 and 80,860.30 is: 111,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,843.86 : 205,403.71 = 80,860.30 : x
  2. Step 2: Convert to fraction form
    148,843.86/205,403.71 = 80,860.30/x
  3. Step 3: Cross multiply
    148,843.86x = 205,403.71 × 80,860.30
  4. Step 4: Simplify right side
    148,843.86x = 16,609,005,611.71
  5. Step 5: Solve for x
    x = 16,609,005,611.71/148,843.86
  6. Step 6: Final answer
    x = 111,586.77

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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.