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Finding the Fourth Proportional to 101,172.36, 139,625.58 and 55,859.06

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Solution

The fourth proportional to 101,172.36, 139,625.58 and 55,859.06 is: 77,089.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,172.36 : 139,625.58 = 55,859.06 : x
  2. Step 2: Convert to fraction form
    101,172.36/139,625.58 = 55,859.06/x
  3. Step 3: Cross multiply
    101,172.36x = 139,625.58 × 55,859.06
  4. Step 4: Simplify right side
    101,172.36x = 7,799,353,650.75
  5. Step 5: Solve for x
    x = 7,799,353,650.75/101,172.36
  6. Step 6: Final answer
    x = 77,089.77

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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.