Home / 129,639.60-194,459.40-108,903.60

Finding the Fourth Proportional to 129,639.60, 194,459.40 and 108,903.60

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Solution

The fourth proportional to 129,639.60, 194,459.40 and 108,903.60 is: 163,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,639.60 : 194,459.40 = 108,903.60 : x
  2. Step 2: Convert to fraction form
    129,639.60/194,459.40 = 108,903.60/x
  3. Step 3: Cross multiply
    129,639.60x = 194,459.40 × 108,903.60
  4. Step 4: Simplify right side
    129,639.60x = 21,177,328,713.84
  5. Step 5: Solve for x
    x = 21,177,328,713.84/129,639.60
  6. Step 6: Final answer
    x = 163,355.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.