Home / 138,725.31-208,095.15-43,965.57

Finding the Fourth Proportional to 138,725.31, 208,095.15 and 43,965.57

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Solution

The fourth proportional to 138,725.31, 208,095.15 and 43,965.57 is: 65,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,725.31 : 208,095.15 = 43,965.57 : x
  2. Step 2: Convert to fraction form
    138,725.31/208,095.15 = 43,965.57/x
  3. Step 3: Cross multiply
    138,725.31x = 208,095.15 × 43,965.57
  4. Step 4: Simplify right side
    138,725.31x = 9,149,021,883.99
  5. Step 5: Solve for x
    x = 9,149,021,883.99/138,725.31
  6. Step 6: Final answer
    x = 65,950.63

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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.