Home / 149,587.31-206,430.18-81,604.26

Finding the Fourth Proportional to 149,587.31, 206,430.18 and 81,604.26

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Solution

The fourth proportional to 149,587.31, 206,430.18 and 81,604.26 is: 112,613.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,587.31 : 206,430.18 = 81,604.26 : x
  2. Step 2: Convert to fraction form
    149,587.31/206,430.18 = 81,604.26/x
  3. Step 3: Cross multiply
    149,587.31x = 206,430.18 × 81,604.26
  4. Step 4: Simplify right side
    149,587.31x = 16,845,582,080.57
  5. Step 5: Solve for x
    x = 16,845,582,080.57/149,587.31
  6. Step 6: Final answer
    x = 112,613.71

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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.