Home / 138,887.26-208,336.02-71,401.22

Finding the Fourth Proportional to 138,887.26, 208,336.02 and 71,401.22

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Solution

The fourth proportional to 138,887.26, 208,336.02 and 71,401.22 is: 107,104.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,887.26 : 208,336.02 = 71,401.22 : x
  2. Step 2: Convert to fraction form
    138,887.26/208,336.02 = 71,401.22/x
  3. Step 3: Cross multiply
    138,887.26x = 208,336.02 × 71,401.22
  4. Step 4: Simplify right side
    138,887.26x = 14,875,445,997.94
  5. Step 5: Solve for x
    x = 14,875,445,997.94/138,887.26
  6. Step 6: Final answer
    x = 107,104.47

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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.