Home / 129,405.75-194,047.04-45,155.67

Finding the Fourth Proportional to 129,405.75, 194,047.04 and 45,155.67

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Solution

The fourth proportional to 129,405.75, 194,047.04 and 45,155.67 is: 67,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,405.75 : 194,047.04 = 45,155.67 : x
  2. Step 2: Convert to fraction form
    129,405.75/194,047.04 = 45,155.67/x
  3. Step 3: Cross multiply
    129,405.75x = 194,047.04 × 45,155.67
  4. Step 4: Simplify right side
    129,405.75x = 8,762,323,876.94
  5. Step 5: Solve for x
    x = 8,762,323,876.94/129,405.75
  6. Step 6: Final answer
    x = 67,712.02

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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.