Home / 138,663.56-208,021.26-55,564.04

Finding the Fourth Proportional to 138,663.56, 208,021.26 and 55,564.04

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Solution

The fourth proportional to 138,663.56, 208,021.26 and 55,564.04 is: 83,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,663.56 : 208,021.26 = 55,564.04 : x
  2. Step 2: Convert to fraction form
    138,663.56/208,021.26 = 55,564.04/x
  3. Step 3: Cross multiply
    138,663.56x = 208,021.26 × 55,564.04
  4. Step 4: Simplify right side
    138,663.56x = 11,558,501,611.49
  5. Step 5: Solve for x
    x = 11,558,501,611.49/138,663.56
  6. Step 6: Final answer
    x = 83,356.45

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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.