Home / 189,701.28-261,787.68-104,817.60

Finding the Fourth Proportional to 189,701.28, 261,787.68 and 104,817.60

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Solution

The fourth proportional to 189,701.28, 261,787.68 and 104,817.60 is: 144,648.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,701.28 : 261,787.68 = 104,817.60 : x
  2. Step 2: Convert to fraction form
    189,701.28/261,787.68 = 104,817.60/x
  3. Step 3: Cross multiply
    189,701.28x = 261,787.68 × 104,817.60
  4. Step 4: Simplify right side
    189,701.28x = 27,439,956,327.17
  5. Step 5: Solve for x
    x = 27,439,956,327.17/189,701.28
  6. Step 6: Final answer
    x = 144,648.24

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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.