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Finding the Fourth Proportional to 189,686.76, 261,773.04 and 104,809.32

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Solution

The fourth proportional to 189,686.76, 261,773.04 and 104,809.32 is: 144,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,686.76 : 261,773.04 = 104,809.32 : x
  2. Step 2: Convert to fraction form
    189,686.76/261,773.04 = 104,809.32/x
  3. Step 3: Cross multiply
    189,686.76x = 261,773.04 × 104,809.32
  4. Step 4: Simplify right side
    189,686.76x = 27,436,254,316.73
  5. Step 5: Solve for x
    x = 27,436,254,316.73/189,686.76
  6. Step 6: Final answer
    x = 144,639.80

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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.