Home / 128,616.60-177,436.41-80,852.52

Finding the Fourth Proportional to 128,616.60, 177,436.41 and 80,852.52

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Solution

The fourth proportional to 128,616.60, 177,436.41 and 80,852.52 is: 111,542.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,616.60 : 177,436.41 = 80,852.52 : x
  2. Step 2: Convert to fraction form
    128,616.60/177,436.41 = 80,852.52/x
  3. Step 3: Cross multiply
    128,616.60x = 177,436.41 × 80,852.52
  4. Step 4: Simplify right side
    128,616.60x = 14,346,180,888.25
  5. Step 5: Solve for x
    x = 14,346,180,888.25/128,616.60
  6. Step 6: Final answer
    x = 111,542.22

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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.