Home / 131,181,098.90-196,890,621.15-66,529,879.70

Finding the Fourth Proportional to 131,181,098.90, 196,890,621.15 and 66,529,879.70

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Solution

The fourth proportional to 131,181,098.90, 196,890,621.15 and 66,529,879.70 is: 99,855,157.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,181,098.90 : 196,890,621.15 = 66,529,879.70 : x
  2. Step 2: Convert to fraction form
    131,181,098.90/196,890,621.15 = 66,529,879.70/x
  3. Step 3: Cross multiply
    131,181,098.90x = 196,890,621.15 × 66,529,879.70
  4. Step 4: Simplify right side
    131,181,098.90x = 13,099,109,339,167,776
  5. Step 5: Solve for x
    x = 13,099,109,339,167,776/131,181,098.90
  6. Step 6: Final answer
    x = 99,855,157.86

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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.