Home / 129,978,321.60-194,920,243.20-43,719,542.40

Finding the Fourth Proportional to 129,978,321.60, 194,920,243.20 and 43,719,542.40

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Solution

The fourth proportional to 129,978,321.60, 194,920,243.20 and 43,719,542.40 is: 65,563,424.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,978,321.60 : 194,920,243.20 = 43,719,542.40 : x
  2. Step 2: Convert to fraction form
    129,978,321.60/194,920,243.20 = 43,719,542.40/x
  3. Step 3: Cross multiply
    129,978,321.60x = 194,920,243.20 × 43,719,542.40
  4. Step 4: Simplify right side
    129,978,321.60x = 8,521,823,837,200,711
  5. Step 5: Solve for x
    x = 8,521,823,837,200,711/129,978,321.60
  6. Step 6: Final answer
    x = 65,563,424.21

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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.