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Finding the Fourth Proportional to 101,203.72, 139,669.56 and 55,885.84

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Solution

The fourth proportional to 101,203.72, 139,669.56 and 55,885.84 is: 77,127.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,203.72 : 139,669.56 = 55,885.84 : x
  2. Step 2: Convert to fraction form
    101,203.72/139,669.56 = 55,885.84/x
  3. Step 3: Cross multiply
    101,203.72x = 139,669.56 × 55,885.84
  4. Step 4: Simplify right side
    101,203.72x = 7,805,550,683.03
  5. Step 5: Solve for x
    x = 7,805,550,683.03/101,203.72
  6. Step 6: Final answer
    x = 77,127.11

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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.