Home / 128,815.56-177,675.66-124,480.44

Finding the Fourth Proportional to 128,815.56, 177,675.66 and 124,480.44

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Solution

The fourth proportional to 128,815.56, 177,675.66 and 124,480.44 is: 171,696.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,815.56 : 177,675.66 = 124,480.44 : x
  2. Step 2: Convert to fraction form
    128,815.56/177,675.66 = 124,480.44/x
  3. Step 3: Cross multiply
    128,815.56x = 177,675.66 × 124,480.44
  4. Step 4: Simplify right side
    128,815.56x = 22,117,144,334.09
  5. Step 5: Solve for x
    x = 22,117,144,334.09/128,815.56
  6. Step 6: Final answer
    x = 171,696.22

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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.