Home / 128,091.04-192,204.32-90,891.52

Finding the Fourth Proportional to 128,091.04, 192,204.32 and 90,891.52

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Solution

The fourth proportional to 128,091.04, 192,204.32 and 90,891.52 is: 136,385.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,091.04 : 192,204.32 = 90,891.52 : x
  2. Step 2: Convert to fraction form
    128,091.04/192,204.32 = 90,891.52/x
  3. Step 3: Cross multiply
    128,091.04x = 192,204.32 × 90,891.52
  4. Step 4: Simplify right side
    128,091.04x = 17,469,742,795.37
  5. Step 5: Solve for x
    x = 17,469,742,795.37/128,091.04
  6. Step 6: Final answer
    x = 136,385.36

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1.5x scale

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.