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Finding the Fourth Proportional to 188,562.67, 260,216.85 and 103,679.77

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Solution

The fourth proportional to 188,562.67, 260,216.85 and 103,679.77 is: 143,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,562.67 : 260,216.85 = 103,679.77 : x
  2. Step 2: Convert to fraction form
    188,562.67/260,216.85 = 103,679.77/x
  3. Step 3: Cross multiply
    188,562.67x = 260,216.85 × 103,679.77
  4. Step 4: Simplify right side
    188,562.67x = 26,979,223,158.12
  5. Step 5: Solve for x
    x = 26,979,223,158.12/188,562.67
  6. Step 6: Final answer
    x = 143,078.28

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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.