Home / 128,851.56-177,725.16-124,516.44

Finding the Fourth Proportional to 128,851.56, 177,725.16 and 124,516.44

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Solution

The fourth proportional to 128,851.56, 177,725.16 and 124,516.44 is: 171,745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,851.56 : 177,725.16 = 124,516.44 : x
  2. Step 2: Convert to fraction form
    128,851.56/177,725.16 = 124,516.44/x
  3. Step 3: Cross multiply
    128,851.56x = 177,725.16 × 124,516.44
  4. Step 4: Simplify right side
    128,851.56x = 22,129,704,221.63
  5. Step 5: Solve for x
    x = 22,129,704,221.63/128,851.56
  6. Step 6: Final answer
    x = 171,745.72

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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.