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Finding the Fourth Proportional to 101,278.83, 139,752.87 and 55,954.11

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Solution

The fourth proportional to 101,278.83, 139,752.87 and 55,954.11 is: 77,210.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,278.83 : 139,752.87 = 55,954.11 : x
  2. Step 2: Convert to fraction form
    101,278.83/139,752.87 = 55,954.11/x
  3. Step 3: Cross multiply
    101,278.83x = 139,752.87 × 55,954.11
  4. Step 4: Simplify right side
    101,278.83x = 7,819,747,460.80
  5. Step 5: Solve for x
    x = 7,819,747,460.80/101,278.83
  6. Step 6: Final answer
    x = 77,210.09

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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.