Home / 128,512.44-177,360.42-74,066.52

Finding the Fourth Proportional to 128,512.44, 177,360.42 and 74,066.52

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Solution

The fourth proportional to 128,512.44, 177,360.42 and 74,066.52 is: 102,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,512.44 : 177,360.42 = 74,066.52 : x
  2. Step 2: Convert to fraction form
    128,512.44/177,360.42 = 74,066.52/x
  3. Step 3: Cross multiply
    128,512.44x = 177,360.42 × 74,066.52
  4. Step 4: Simplify right side
    128,512.44x = 13,136,469,095.14
  5. Step 5: Solve for x
    x = 13,136,469,095.14/128,512.44
  6. Step 6: Final answer
    x = 102,219.44

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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.