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Finding the Fourth Proportional to 189,044.72, 260,893.36 and 104,161.76

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Solution

The fourth proportional to 189,044.72, 260,893.36 and 104,161.76 is: 143,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,044.72 : 260,893.36 = 104,161.76 : x
  2. Step 2: Convert to fraction form
    189,044.72/260,893.36 = 104,161.76/x
  3. Step 3: Cross multiply
    189,044.72x = 260,893.36 × 104,161.76
  4. Step 4: Simplify right side
    189,044.72x = 27,175,111,549.91
  5. Step 5: Solve for x
    x = 27,175,111,549.91/189,044.72
  6. Step 6: Final answer
    x = 143,749.65

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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.