Home / 154,678,243.20-213,451,089.60-85,063,408.80

Finding the Fourth Proportional to 154,678,243.20, 213,451,089.60 and 85,063,408.80

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Solution

The fourth proportional to 154,678,243.20, 213,451,089.60 and 85,063,408.80 is: 117,384,817.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,678,243.20 : 213,451,089.60 = 85,063,408.80 : x
  2. Step 2: Convert to fraction form
    154,678,243.20/213,451,089.60 = 85,063,408.80/x
  3. Step 3: Cross multiply
    154,678,243.20x = 213,451,089.60 × 85,063,408.80
  4. Step 4: Simplify right side
    154,678,243.20x = 18,156,877,293,450,228
  5. Step 5: Solve for x
    x = 18,156,877,293,450,228/154,678,243.20
  6. Step 6: Final answer
    x = 117,384,817.14

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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.