Home / 105,947.28-146,336.76-79,208.64

Finding the Fourth Proportional to 105,947.28, 146,336.76 and 79,208.64

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Solution

The fourth proportional to 105,947.28, 146,336.76 and 79,208.64 is: 109,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,947.28 : 146,336.76 = 79,208.64 : x
  2. Step 2: Convert to fraction form
    105,947.28/146,336.76 = 79,208.64/x
  3. Step 3: Cross multiply
    105,947.28x = 146,336.76 × 79,208.64
  4. Step 4: Simplify right side
    105,947.28x = 11,591,135,741.61
  5. Step 5: Solve for x
    x = 11,591,135,741.61/105,947.28
  6. Step 6: Final answer
    x = 109,404.75

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1.5x scale

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.