Home / 129,421.50-194,132.01-73,978.62

Finding the Fourth Proportional to 129,421.50, 194,132.01 and 73,978.62

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Solution

The fourth proportional to 129,421.50, 194,132.01 and 73,978.62 is: 110,967.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,421.50 : 194,132.01 = 73,978.62 : x
  2. Step 2: Convert to fraction form
    129,421.50/194,132.01 = 73,978.62/x
  3. Step 3: Cross multiply
    129,421.50x = 194,132.01 × 73,978.62
  4. Step 4: Simplify right side
    129,421.50x = 14,361,618,197.63
  5. Step 5: Solve for x
    x = 14,361,618,197.63/129,421.50
  6. Step 6: Final answer
    x = 110,967.79

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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.