Home / 236,190.24-325,938-128,761.20

Finding the Fourth Proportional to 236,190.24, 325,938 and 128,761.20

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Solution

The fourth proportional to 236,190.24, 325,938 and 128,761.20 is: 177,687.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,190.24 : 325,938 = 128,761.20 : x
  2. Step 2: Convert to fraction form
    236,190.24/325,938 = 128,761.20/x
  3. Step 3: Cross multiply
    236,190.24x = 325,938 × 128,761.20
  4. Step 4: Simplify right side
    236,190.24x = 41,968,168,005.60
  5. Step 5: Solve for x
    x = 41,968,168,005.60/236,190.24
  6. Step 6: Final answer
    x = 177,687.99

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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.