Home / 129,948.60-194,922.90-85,625.40

Finding the Fourth Proportional to 129,948.60, 194,922.90 and 85,625.40

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Solution

The fourth proportional to 129,948.60, 194,922.90 and 85,625.40 is: 128,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,948.60 : 194,922.90 = 85,625.40 : x
  2. Step 2: Convert to fraction form
    129,948.60/194,922.90 = 85,625.40/x
  3. Step 3: Cross multiply
    129,948.60x = 194,922.90 × 85,625.40
  4. Step 4: Simplify right side
    129,948.60x = 16,690,351,281.66
  5. Step 5: Solve for x
    x = 16,690,351,281.66/129,948.60
  6. Step 6: Final answer
    x = 128,438.10

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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.