Home / 168,259,672.80-252,389,509.20-139,538,239.20

Finding the Fourth Proportional to 168,259,672.80, 252,389,509.20 and 139,538,239.20

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Solution

The fourth proportional to 168,259,672.80, 252,389,509.20 and 139,538,239.20 is: 209,307,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,259,672.80 : 252,389,509.20 = 139,538,239.20 : x
  2. Step 2: Convert to fraction form
    168,259,672.80/252,389,509.20 = 139,538,239.20/x
  3. Step 3: Cross multiply
    168,259,672.80x = 252,389,509.20 × 139,538,239.20
  4. Step 4: Simplify right side
    168,259,672.80x = 35,217,987,706,320,196
  5. Step 5: Solve for x
    x = 35,217,987,706,320,196/168,259,672.80
  6. Step 6: Final answer
    x = 209,307,358.80

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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.