Home / 129,720.54-194,586.63-39,756.66

Finding the Fourth Proportional to 129,720.54, 194,586.63 and 39,756.66

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Solution

The fourth proportional to 129,720.54, 194,586.63 and 39,756.66 is: 59,636.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,720.54 : 194,586.63 = 39,756.66 : x
  2. Step 2: Convert to fraction form
    129,720.54/194,586.63 = 39,756.66/x
  3. Step 3: Cross multiply
    129,720.54x = 194,586.63 × 39,756.66
  4. Step 4: Simplify right side
    129,720.54x = 7,736,114,102.38
  5. Step 5: Solve for x
    x = 7,736,114,102.38/129,720.54
  6. Step 6: Final answer
    x = 59,636.77

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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.