Home / 129,631.80-194,447.70-120,774.45

Finding the Fourth Proportional to 129,631.80, 194,447.70 and 120,774.45

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Solution

The fourth proportional to 129,631.80, 194,447.70 and 120,774.45 is: 181,161.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,631.80 : 194,447.70 = 120,774.45 : x
  2. Step 2: Convert to fraction form
    129,631.80/194,447.70 = 120,774.45/x
  3. Step 3: Cross multiply
    129,631.80x = 194,447.70 × 120,774.45
  4. Step 4: Simplify right side
    129,631.80x = 23,484,314,021.27
  5. Step 5: Solve for x
    x = 23,484,314,021.27/129,631.80
  6. Step 6: Final answer
    x = 181,161.68

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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.