Home / 129,352,973.22-178,571,118.78-79,820,629.56

Finding the Fourth Proportional to 129,352,973.22, 178,571,118.78 and 79,820,629.56

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Solution

The fourth proportional to 129,352,973.22, 178,571,118.78 and 79,820,629.56 is: 110,191,971.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,352,973.22 : 178,571,118.78 = 79,820,629.56 : x
  2. Step 2: Convert to fraction form
    129,352,973.22/178,571,118.78 = 79,820,629.56/x
  3. Step 3: Cross multiply
    129,352,973.22x = 178,571,118.78 × 79,820,629.56
  4. Step 4: Simplify right side
    129,352,973.22x = 14,253,659,122,253,140
  5. Step 5: Solve for x
    x = 14,253,659,122,253,140/129,352,973.22
  6. Step 6: Final answer
    x = 110,191,971.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.