Home / 138,997.06-208,534.50-54,705.22

Finding the Fourth Proportional to 138,997.06, 208,534.50 and 54,705.22

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Solution

The fourth proportional to 138,997.06, 208,534.50 and 54,705.22 is: 82,073.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,997.06 : 208,534.50 = 54,705.22 : x
  2. Step 2: Convert to fraction form
    138,997.06/208,534.50 = 54,705.22/x
  3. Step 3: Cross multiply
    138,997.06x = 208,534.50 × 54,705.22
  4. Step 4: Simplify right side
    138,997.06x = 11,407,925,700.09
  5. Step 5: Solve for x
    x = 11,407,925,700.09/138,997.06
  6. Step 6: Final answer
    x = 82,073.14

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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.