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Finding the Fourth Proportional to 123,719.70, 185,579.55 and 61,511.70

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Solution

The fourth proportional to 123,719.70, 185,579.55 and 61,511.70 is: 92,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,719.70 : 185,579.55 = 61,511.70 : x
  2. Step 2: Convert to fraction form
    123,719.70/185,579.55 = 61,511.70/x
  3. Step 3: Cross multiply
    123,719.70x = 185,579.55 × 61,511.70
  4. Step 4: Simplify right side
    123,719.70x = 11,415,313,605.74
  5. Step 5: Solve for x
    x = 11,415,313,605.74/123,719.70
  6. Step 6: Final answer
    x = 92,267.55

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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.