Home / 129,627.84-194,451.36-45,378.72

Finding the Fourth Proportional to 129,627.84, 194,451.36 and 45,378.72

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Solution

The fourth proportional to 129,627.84, 194,451.36 and 45,378.72 is: 68,071.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,627.84 : 194,451.36 = 45,378.72 : x
  2. Step 2: Convert to fraction form
    129,627.84/194,451.36 = 45,378.72/x
  3. Step 3: Cross multiply
    129,627.84x = 194,451.36 × 45,378.72
  4. Step 4: Simplify right side
    129,627.84x = 8,823,953,819.06
  5. Step 5: Solve for x
    x = 8,823,953,819.06/129,627.84
  6. Step 6: Final answer
    x = 68,071.44

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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.