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Finding the Fourth Proportional to 101,054.83, 139,465.52 and 75,516.85

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Solution

The fourth proportional to 101,054.83, 139,465.52 and 75,516.85 is: 104,220.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,054.83 : 139,465.52 = 75,516.85 : x
  2. Step 2: Convert to fraction form
    101,054.83/139,465.52 = 75,516.85/x
  3. Step 3: Cross multiply
    101,054.83x = 139,465.52 × 75,516.85
  4. Step 4: Simplify right side
    101,054.83x = 10,531,996,754.01
  5. Step 5: Solve for x
    x = 10,531,996,754.01/101,054.83
  6. Step 6: Final answer
    x = 104,220.62

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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.