Home / 128,401.28-177,198.62-70,261.93

Finding the Fourth Proportional to 128,401.28, 177,198.62 and 70,261.93

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Solution

The fourth proportional to 128,401.28, 177,198.62 and 70,261.93 is: 96,964.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,401.28 : 177,198.62 = 70,261.93 : x
  2. Step 2: Convert to fraction form
    128,401.28/177,198.62 = 70,261.93/x
  3. Step 3: Cross multiply
    128,401.28x = 177,198.62 × 70,261.93
  4. Step 4: Simplify right side
    128,401.28x = 12,450,317,299.95
  5. Step 5: Solve for x
    x = 12,450,317,299.95/128,401.28
  6. Step 6: Final answer
    x = 96,964.12

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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.