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Finding the Fourth Proportional to 101,236.77, 139,703.94 and 55,913.94

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Solution

The fourth proportional to 101,236.77, 139,703.94 and 55,913.94 is: 77,159.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,236.77 : 139,703.94 = 55,913.94 : x
  2. Step 2: Convert to fraction form
    101,236.77/139,703.94 = 55,913.94/x
  3. Step 3: Cross multiply
    101,236.77x = 139,703.94 × 55,913.94
  4. Step 4: Simplify right side
    101,236.77x = 7,811,397,718.92
  5. Step 5: Solve for x
    x = 7,811,397,718.92/101,236.77
  6. Step 6: Final answer
    x = 77,159.69

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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.