Home / 148,690.65-205,196.79-80,710.46

Finding the Fourth Proportional to 148,690.65, 205,196.79 and 80,710.46

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Solution

The fourth proportional to 148,690.65, 205,196.79 and 80,710.46 is: 111,382.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,690.65 : 205,196.79 = 80,710.46 : x
  2. Step 2: Convert to fraction form
    148,690.65/205,196.79 = 80,710.46/x
  3. Step 3: Cross multiply
    148,690.65x = 205,196.79 × 80,710.46
  4. Step 4: Simplify right side
    148,690.65x = 16,561,526,285.44
  5. Step 5: Solve for x
    x = 16,561,526,285.44/148,690.65
  6. Step 6: Final answer
    x = 111,382.43

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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.