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Finding the Fourth Proportional to 128,028.33, 191,981.03 and 60,504.17

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Solution

The fourth proportional to 128,028.33, 191,981.03 and 60,504.17 is: 90,727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,028.33 : 191,981.03 = 60,504.17 : x
  2. Step 2: Convert to fraction form
    128,028.33/191,981.03 = 60,504.17/x
  3. Step 3: Cross multiply
    128,028.33x = 191,981.03 × 60,504.17
  4. Step 4: Simplify right side
    128,028.33x = 11,615,651,613.47
  5. Step 5: Solve for x
    x = 11,615,651,613.47/128,028.33
  6. Step 6: Final answer
    x = 90,727.20

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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.