Home / 266,119,115.20-399,178,672.80-129,891,889.60

Finding the Fourth Proportional to 266,119,115.20, 399,178,672.80 and 129,891,889.60

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Solution

The fourth proportional to 266,119,115.20, 399,178,672.80 and 129,891,889.60 is: 194,837,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,119,115.20 : 399,178,672.80 = 129,891,889.60 : x
  2. Step 2: Convert to fraction form
    266,119,115.20/399,178,672.80 = 129,891,889.60/x
  3. Step 3: Cross multiply
    266,119,115.20x = 399,178,672.80 × 129,891,889.60
  4. Step 4: Simplify right side
    266,119,115.20x = 51,850,072,098,012,120
  5. Step 5: Solve for x
    x = 51,850,072,098,012,120/266,119,115.20
  6. Step 6: Final answer
    x = 194,837,834.40

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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.