Home / 80,045.72-120,130.56-30,171.19

Finding the Fourth Proportional to 80,045.72, 120,130.56 and 30,171.19

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Solution

The fourth proportional to 80,045.72, 120,130.56 and 30,171.19 is: 45,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,045.72 : 120,130.56 = 30,171.19 : x
  2. Step 2: Convert to fraction form
    80,045.72/120,130.56 = 30,171.19/x
  3. Step 3: Cross multiply
    80,045.72x = 120,130.56 × 30,171.19
  4. Step 4: Simplify right side
    80,045.72x = 3,624,481,950.57
  5. Step 5: Solve for x
    x = 3,624,481,950.57/80,045.72
  6. Step 6: Final answer
    x = 45,280.15

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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.