Home / 148,853.40-205,418.67-80,870.36

Finding the Fourth Proportional to 148,853.40, 205,418.67 and 80,870.36

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Solution

The fourth proportional to 148,853.40, 205,418.67 and 80,870.36 is: 111,601.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,853.40 : 205,418.67 = 80,870.36 : x
  2. Step 2: Convert to fraction form
    148,853.40/205,418.67 = 80,870.36/x
  3. Step 3: Cross multiply
    148,853.40x = 205,418.67 × 80,870.36
  4. Step 4: Simplify right side
    148,853.40x = 16,612,280,766.53
  5. Step 5: Solve for x
    x = 16,612,280,766.53/148,853.40
  6. Step 6: Final answer
    x = 111,601.62

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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.