Home / 138,778.52-191,513.97-75,116.16

Finding the Fourth Proportional to 138,778.52, 191,513.97 and 75,116.16

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Solution

The fourth proportional to 138,778.52, 191,513.97 and 75,116.16 is: 103,660.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,778.52 : 191,513.97 = 75,116.16 : x
  2. Step 2: Convert to fraction form
    138,778.52/191,513.97 = 75,116.16/x
  3. Step 3: Cross multiply
    138,778.52x = 191,513.97 × 75,116.16
  4. Step 4: Simplify right side
    138,778.52x = 14,385,794,012.76
  5. Step 5: Solve for x
    x = 14,385,794,012.76/138,778.52
  6. Step 6: Final answer
    x = 103,660.09

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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.