Home / 180,672,858.72-270,856,936.80-78,359,834.16

Finding the Fourth Proportional to 180,672,858.72, 270,856,936.80 and 78,359,834.16

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Solution

The fourth proportional to 180,672,858.72, 270,856,936.80 and 78,359,834.16 is: 117,473,674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,672,858.72 : 270,856,936.80 = 78,359,834.16 : x
  2. Step 2: Convert to fraction form
    180,672,858.72/270,856,936.80 = 78,359,834.16/x
  3. Step 3: Cross multiply
    180,672,858.72x = 270,856,936.80 × 78,359,834.16
  4. Step 4: Simplify right side
    180,672,858.72x = 21,224,304,648,733,600
  5. Step 5: Solve for x
    x = 21,224,304,648,733,600/180,672,858.72
  6. Step 6: Final answer
    x = 117,473,674.79

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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.