Home / 105,660.72-145,694.70-67,359.60

Finding the Fourth Proportional to 105,660.72, 145,694.70 and 67,359.60

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Solution

The fourth proportional to 105,660.72, 145,694.70 and 67,359.60 is: 92,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,660.72 : 145,694.70 = 67,359.60 : x
  2. Step 2: Convert to fraction form
    105,660.72/145,694.70 = 67,359.60/x
  3. Step 3: Cross multiply
    105,660.72x = 145,694.70 × 67,359.60
  4. Step 4: Simplify right side
    105,660.72x = 9,813,936,714.12
  5. Step 5: Solve for x
    x = 9,813,936,714.12/105,660.72
  6. Step 6: Final answer
    x = 92,881.60

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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.