Home / 128,150.09-176,839.80-76,525.44

Finding the Fourth Proportional to 128,150.09, 176,839.80 and 76,525.44

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Solution

The fourth proportional to 128,150.09, 176,839.80 and 76,525.44 is: 105,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,150.09 : 176,839.80 = 76,525.44 : x
  2. Step 2: Convert to fraction form
    128,150.09/176,839.80 = 76,525.44/x
  3. Step 3: Cross multiply
    128,150.09x = 176,839.80 × 76,525.44
  4. Step 4: Simplify right side
    128,150.09x = 13,532,743,504.51
  5. Step 5: Solve for x
    x = 13,532,743,504.51/128,150.09
  6. Step 6: Final answer
    x = 105,600.73

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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.