Home / 105,972.81-146,206.30-65,671.86

Finding the Fourth Proportional to 105,972.81, 146,206.30 and 65,671.86

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Solution

The fourth proportional to 105,972.81, 146,206.30 and 65,671.86 is: 90,604.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,972.81 : 146,206.30 = 65,671.86 : x
  2. Step 2: Convert to fraction form
    105,972.81/146,206.30 = 65,671.86/x
  3. Step 3: Cross multiply
    105,972.81x = 146,206.30 × 65,671.86
  4. Step 4: Simplify right side
    105,972.81x = 9,601,639,664.72
  5. Step 5: Solve for x
    x = 9,601,639,664.72/105,972.81
  6. Step 6: Final answer
    x = 90,604.75

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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.