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Finding the Fourth Proportional to 189,166.72, 261,061.50 and 104,283.40

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Solution

The fourth proportional to 189,166.72, 261,061.50 and 104,283.40 is: 143,917.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,166.72 : 261,061.50 = 104,283.40 : x
  2. Step 2: Convert to fraction form
    189,166.72/261,061.50 = 104,283.40/x
  3. Step 3: Cross multiply
    189,166.72x = 261,061.50 × 104,283.40
  4. Step 4: Simplify right side
    189,166.72x = 27,224,380,829.10
  5. Step 5: Solve for x
    x = 27,224,380,829.10/189,166.72
  6. Step 6: Final answer
    x = 143,917.39

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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.