Home / 140,972.40-211,458.60-138,898.80

Finding the Fourth Proportional to 140,972.40, 211,458.60 and 138,898.80

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Solution

The fourth proportional to 140,972.40, 211,458.60 and 138,898.80 is: 208,348.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,972.40 : 211,458.60 = 138,898.80 : x
  2. Step 2: Convert to fraction form
    140,972.40/211,458.60 = 138,898.80/x
  3. Step 3: Cross multiply
    140,972.40x = 211,458.60 × 138,898.80
  4. Step 4: Simplify right side
    140,972.40x = 29,371,345,789.68
  5. Step 5: Solve for x
    x = 29,371,345,789.68/140,972.40
  6. Step 6: Final answer
    x = 208,348.20

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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.