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Finding the Fourth Proportional to 100,880.08, 151,371.44 and 77,338.39

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Solution

The fourth proportional to 100,880.08, 151,371.44 and 77,338.39 is: 116,046.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,880.08 : 151,371.44 = 77,338.39 : x
  2. Step 2: Convert to fraction form
    100,880.08/151,371.44 = 77,338.39/x
  3. Step 3: Cross multiply
    100,880.08x = 151,371.44 × 77,338.39
  4. Step 4: Simplify right side
    100,880.08x = 11,706,823,276.50
  5. Step 5: Solve for x
    x = 11,706,823,276.50/100,880.08
  6. Step 6: Final answer
    x = 116,046.93

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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.