Home / 128,561.26-177,416.40-74,083.48

Finding the Fourth Proportional to 128,561.26, 177,416.40 and 74,083.48

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Solution

The fourth proportional to 128,561.26, 177,416.40 and 74,083.48 is: 102,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,561.26 : 177,416.40 = 74,083.48 : x
  2. Step 2: Convert to fraction form
    128,561.26/177,416.40 = 74,083.48/x
  3. Step 3: Cross multiply
    128,561.26x = 177,416.40 × 74,083.48
  4. Step 4: Simplify right side
    128,561.26x = 13,143,624,321.07
  5. Step 5: Solve for x
    x = 13,143,624,321.07/128,561.26
  6. Step 6: Final answer
    x = 102,236.27

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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.