Home / 149,379.70-206,141.31-81,397.26

Finding the Fourth Proportional to 149,379.70, 206,141.31 and 81,397.26

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Solution

The fourth proportional to 149,379.70, 206,141.31 and 81,397.26 is: 112,326.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,379.70 : 206,141.31 = 81,397.26 : x
  2. Step 2: Convert to fraction form
    149,379.70/206,141.31 = 81,397.26/x
  3. Step 3: Cross multiply
    149,379.70x = 206,141.31 × 81,397.26
  4. Step 4: Simplify right side
    149,379.70x = 16,779,337,806.81
  5. Step 5: Solve for x
    x = 16,779,337,806.81/149,379.70
  6. Step 6: Final answer
    x = 112,326.76

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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.