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Finding the Fourth Proportional to 101,068.80, 151,610.88 and 77,410.56

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Solution

The fourth proportional to 101,068.80, 151,610.88 and 77,410.56 is: 116,121.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,068.80 : 151,610.88 = 77,410.56 : x
  2. Step 2: Convert to fraction form
    101,068.80/151,610.88 = 77,410.56/x
  3. Step 3: Cross multiply
    101,068.80x = 151,610.88 × 77,410.56
  4. Step 4: Simplify right side
    101,068.80x = 11,736,283,122.89
  5. Step 5: Solve for x
    x = 11,736,283,122.89/101,068.80
  6. Step 6: Final answer
    x = 116,121.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.