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Finding the Fourth Proportional to 101,118.78, 151,678.98 and 66,279.06

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Solution

The fourth proportional to 101,118.78, 151,678.98 and 66,279.06 is: 99,419.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,118.78 : 151,678.98 = 66,279.06 : x
  2. Step 2: Convert to fraction form
    101,118.78/151,678.98 = 66,279.06/x
  3. Step 3: Cross multiply
    101,118.78x = 151,678.98 × 66,279.06
  4. Step 4: Simplify right side
    101,118.78x = 10,053,140,216.16
  5. Step 5: Solve for x
    x = 10,053,140,216.16/101,118.78
  6. Step 6: Final answer
    x = 99,419.12

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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.