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Finding the Fourth Proportional to 101,133.84, 139,562.12 and 55,811.22

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Solution

The fourth proportional to 101,133.84, 139,562.12 and 55,811.22 is: 77,018.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,133.84 : 139,562.12 = 55,811.22 : x
  2. Step 2: Convert to fraction form
    101,133.84/139,562.12 = 55,811.22/x
  3. Step 3: Cross multiply
    101,133.84x = 139,562.12 × 55,811.22
  4. Step 4: Simplify right side
    101,133.84x = 7,789,132,182.99
  5. Step 5: Solve for x
    x = 7,789,132,182.99/101,133.84
  6. Step 6: Final answer
    x = 77,018.06

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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.