Home / 148,685.58-205,186.26-80,702.55

Finding the Fourth Proportional to 148,685.58, 205,186.26 and 80,702.55

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Solution

The fourth proportional to 148,685.58, 205,186.26 and 80,702.55 is: 111,369.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,685.58 : 205,186.26 = 80,702.55 : x
  2. Step 2: Convert to fraction form
    148,685.58/205,186.26 = 80,702.55/x
  3. Step 3: Cross multiply
    148,685.58x = 205,186.26 × 80,702.55
  4. Step 4: Simplify right side
    148,685.58x = 16,559,054,406.96
  5. Step 5: Solve for x
    x = 16,559,054,406.96/148,685.58
  6. Step 6: Final answer
    x = 111,369.61

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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.