Home / 128,282.80-192,342.69-112,519.48

Finding the Fourth Proportional to 128,282.80, 192,342.69 and 112,519.48

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Solution

The fourth proportional to 128,282.80, 192,342.69 and 112,519.48 is: 168,707.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,282.80 : 192,342.69 = 112,519.48 : x
  2. Step 2: Convert to fraction form
    128,282.80/192,342.69 = 112,519.48/x
  3. Step 3: Cross multiply
    128,282.80x = 192,342.69 × 112,519.48
  4. Step 4: Simplify right side
    128,282.80x = 21,642,299,460.60
  5. Step 5: Solve for x
    x = 21,642,299,460.60/128,282.80
  6. Step 6: Final answer
    x = 168,707.73

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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.