Home / 145,008,429.20-217,512,643.80-80,511,174.80

Finding the Fourth Proportional to 145,008,429.20, 217,512,643.80 and 80,511,174.80

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Solution

The fourth proportional to 145,008,429.20, 217,512,643.80 and 80,511,174.80 is: 120,766,762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,008,429.20 : 217,512,643.80 = 80,511,174.80 : x
  2. Step 2: Convert to fraction form
    145,008,429.20/217,512,643.80 = 80,511,174.80/x
  3. Step 3: Cross multiply
    145,008,429.20x = 217,512,643.80 × 80,511,174.80
  4. Step 4: Simplify right side
    145,008,429.20x = 17,512,198,486,191,936
  5. Step 5: Solve for x
    x = 17,512,198,486,191,936/145,008,429.20
  6. Step 6: Final answer
    x = 120,766,762.20

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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.