Home / 129,129,321.78-193,694,190.44-39,289,472.24

Finding the Fourth Proportional to 129,129,321.78, 193,694,190.44 and 39,289,472.24

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Solution

The fourth proportional to 129,129,321.78, 193,694,190.44 and 39,289,472.24 is: 58,934,271.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,129,321.78 : 193,694,190.44 = 39,289,472.24 : x
  2. Step 2: Convert to fraction form
    129,129,321.78/193,694,190.44 = 39,289,472.24/x
  3. Step 3: Cross multiply
    129,129,321.78x = 193,694,190.44 × 39,289,472.24
  4. Step 4: Simplify right side
    129,129,321.78x = 7,610,142,517,176,735
  5. Step 5: Solve for x
    x = 7,610,142,517,176,735/129,129,321.78
  6. Step 6: Final answer
    x = 58,934,271.57

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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.