Home / 128,291.88-177,037.22-70,147.55

Finding the Fourth Proportional to 128,291.88, 177,037.22 and 70,147.55

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Solution

The fourth proportional to 128,291.88, 177,037.22 and 70,147.55 is: 96,800.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,291.88 : 177,037.22 = 70,147.55 : x
  2. Step 2: Convert to fraction form
    128,291.88/177,037.22 = 70,147.55/x
  3. Step 3: Cross multiply
    128,291.88x = 177,037.22 × 70,147.55
  4. Step 4: Simplify right side
    128,291.88x = 12,418,726,181.26
  5. Step 5: Solve for x
    x = 12,418,726,181.26/128,291.88
  6. Step 6: Final answer
    x = 96,800.57

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1.5x scale

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.