Home / 128,150.22-176,839.98-76,525.57

Finding the Fourth Proportional to 128,150.22, 176,839.98 and 76,525.57

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Solution

The fourth proportional to 128,150.22, 176,839.98 and 76,525.57 is: 105,600.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,150.22 : 176,839.98 = 76,525.57 : x
  2. Step 2: Convert to fraction form
    128,150.22/176,839.98 = 76,525.57/x
  3. Step 3: Cross multiply
    128,150.22x = 176,839.98 × 76,525.57
  4. Step 4: Simplify right side
    128,150.22x = 13,532,780,202.37
  5. Step 5: Solve for x
    x = 13,532,780,202.37/128,150.22
  6. Step 6: Final answer
    x = 105,600.92

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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.