Home / 140,393.80-193,731.78-76,731.40

Finding the Fourth Proportional to 140,393.80, 193,731.78 and 76,731.40

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Solution

The fourth proportional to 140,393.80, 193,731.78 and 76,731.40 is: 105,882.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,393.80 : 193,731.78 = 76,731.40 : x
  2. Step 2: Convert to fraction form
    140,393.80/193,731.78 = 76,731.40/x
  3. Step 3: Cross multiply
    140,393.80x = 193,731.78 × 76,731.40
  4. Step 4: Simplify right side
    140,393.80x = 14,865,310,703.89
  5. Step 5: Solve for x
    x = 14,865,310,703.89/140,393.80
  6. Step 6: Final answer
    x = 105,882.96

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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.