Home / 149,741.56-206,643.84-81,758.68

Finding the Fourth Proportional to 149,741.56, 206,643.84 and 81,758.68

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Solution

The fourth proportional to 149,741.56, 206,643.84 and 81,758.68 is: 112,827.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,741.56 : 206,643.84 = 81,758.68 : x
  2. Step 2: Convert to fraction form
    149,741.56/206,643.84 = 81,758.68/x
  3. Step 3: Cross multiply
    149,741.56x = 206,643.84 × 81,758.68
  4. Step 4: Simplify right side
    149,741.56x = 16,894,927,588.53
  5. Step 5: Solve for x
    x = 16,894,927,588.53/149,741.56
  6. Step 6: Final answer
    x = 112,827.24

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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.