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Finding the Fourth Proportional to 101,235.77, 139,706.42 and 55,914.91

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Solution

The fourth proportional to 101,235.77, 139,706.42 and 55,914.91 is: 77,163.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,235.77 : 139,706.42 = 55,914.91 : x
  2. Step 2: Convert to fraction form
    101,235.77/139,706.42 = 55,914.91/x
  3. Step 3: Cross multiply
    101,235.77x = 139,706.42 × 55,914.91
  4. Step 4: Simplify right side
    101,235.77x = 7,811,671,586.40
  5. Step 5: Solve for x
    x = 7,811,671,586.40/101,235.77
  6. Step 6: Final answer
    x = 77,163.15

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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.