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Finding the Fourth Proportional to 140,391.75, 193,737.74 and 76,730.01

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Solution

The fourth proportional to 140,391.75, 193,737.74 and 76,730.01 is: 105,885.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,391.75 : 193,737.74 = 76,730.01 : x
  2. Step 2: Convert to fraction form
    140,391.75/193,737.74 = 76,730.01/x
  3. Step 3: Cross multiply
    140,391.75x = 193,737.74 × 76,730.01
  4. Step 4: Simplify right side
    140,391.75x = 14,865,498,727.58
  5. Step 5: Solve for x
    x = 14,865,498,727.58/140,391.75
  6. Step 6: Final answer
    x = 105,885.84

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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.