Home / 149,379.24-206,140.70-81,396.69

Finding the Fourth Proportional to 149,379.24, 206,140.70 and 81,396.69

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Solution

The fourth proportional to 149,379.24, 206,140.70 and 81,396.69 is: 112,325.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,379.24 : 206,140.70 = 81,396.69 : x
  2. Step 2: Convert to fraction form
    149,379.24/206,140.70 = 81,396.69/x
  3. Step 3: Cross multiply
    149,379.24x = 206,140.70 × 81,396.69
  4. Step 4: Simplify right side
    149,379.24x = 16,779,170,247.30
  5. Step 5: Solve for x
    x = 16,779,170,247.30/149,379.24
  6. Step 6: Final answer
    x = 112,325.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.