Home / 107,639.28-148,479-69,938.48

Finding the Fourth Proportional to 107,639.28, 148,479 and 69,938.48

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Solution

The fourth proportional to 107,639.28, 148,479 and 69,938.48 is: 96,474.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,639.28 : 148,479 = 69,938.48 : x
  2. Step 2: Convert to fraction form
    107,639.28/148,479 = 69,938.48/x
  3. Step 3: Cross multiply
    107,639.28x = 148,479 × 69,938.48
  4. Step 4: Simplify right side
    107,639.28x = 10,384,395,571.92
  5. Step 5: Solve for x
    x = 10,384,395,571.92/107,639.28
  6. Step 6: Final answer
    x = 96,474.03

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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.