Home / 140,064.69-193,286.13-76,404.78

Finding the Fourth Proportional to 140,064.69, 193,286.13 and 76,404.78

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Solution

The fourth proportional to 140,064.69, 193,286.13 and 76,404.78 is: 105,436.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,064.69 : 193,286.13 = 76,404.78 : x
  2. Step 2: Convert to fraction form
    140,064.69/193,286.13 = 76,404.78/x
  3. Step 3: Cross multiply
    140,064.69x = 193,286.13 × 76,404.78
  4. Step 4: Simplify right side
    140,064.69x = 14,767,984,239.70
  5. Step 5: Solve for x
    x = 14,767,984,239.70/140,064.69
  6. Step 6: Final answer
    x = 105,436.88

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1.5x scale

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.