Home / 142,678,891.20-214,018,336.80-74,654,443.20

Finding the Fourth Proportional to 142,678,891.20, 214,018,336.80 and 74,654,443.20

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Solution

The fourth proportional to 142,678,891.20, 214,018,336.80 and 74,654,443.20 is: 111,981,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,678,891.20 : 214,018,336.80 = 74,654,443.20 : x
  2. Step 2: Convert to fraction form
    142,678,891.20/214,018,336.80 = 74,654,443.20/x
  3. Step 3: Cross multiply
    142,678,891.20x = 214,018,336.80 × 74,654,443.20
  4. Step 4: Simplify right side
    142,678,891.20x = 15,977,419,768,394,072
  5. Step 5: Solve for x
    x = 15,977,419,768,394,072/142,678,891.20
  6. Step 6: Final answer
    x = 111,981,664.80

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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.