Home / 140,045,758.20-209,926,919.70-82,508,412.60

Finding the Fourth Proportional to 140,045,758.20, 209,926,919.70 and 82,508,412.60

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Solution

The fourth proportional to 140,045,758.20, 209,926,919.70 and 82,508,412.60 is: 123,679,125.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,045,758.20 : 209,926,919.70 = 82,508,412.60 : x
  2. Step 2: Convert to fraction form
    140,045,758.20/209,926,919.70 = 82,508,412.60/x
  3. Step 3: Cross multiply
    140,045,758.20x = 209,926,919.70 × 82,508,412.60
  4. Step 4: Simplify right side
    140,045,758.20x = 17,320,736,906,454,666
  5. Step 5: Solve for x
    x = 17,320,736,906,454,666/140,045,758.20
  6. Step 6: Final answer
    x = 123,679,125.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.