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Finding the Fourth Proportional to 189,583.76, 261,621.96 and 104,699

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Solution

The fourth proportional to 189,583.76, 261,621.96 and 104,699 is: 144,482.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,583.76 : 261,621.96 = 104,699 : x
  2. Step 2: Convert to fraction form
    189,583.76/261,621.96 = 104,699/x
  3. Step 3: Cross multiply
    189,583.76x = 261,621.96 × 104,699
  4. Step 4: Simplify right side
    189,583.76x = 27,391,557,590.04
  5. Step 5: Solve for x
    x = 27,391,557,590.04/189,583.76
  6. Step 6: Final answer
    x = 144,482.62

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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.