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Finding the Fourth Proportional to 136,887.96, 205,460.74 and 69,468.40

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Solution

The fourth proportional to 136,887.96, 205,460.74 and 69,468.40 is: 104,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,887.96 : 205,460.74 = 69,468.40 : x
  2. Step 2: Convert to fraction form
    136,887.96/205,460.74 = 69,468.40/x
  3. Step 3: Cross multiply
    136,887.96x = 205,460.74 × 69,468.40
  4. Step 4: Simplify right side
    136,887.96x = 14,273,028,530.64
  5. Step 5: Solve for x
    x = 14,273,028,530.64/136,887.96
  6. Step 6: Final answer
    x = 104,267.97

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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.