Home / 135,462.88-186,921.07-78,104.35

Finding the Fourth Proportional to 135,462.88, 186,921.07 and 78,104.35

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Solution

The fourth proportional to 135,462.88, 186,921.07 and 78,104.35 is: 107,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,462.88 : 186,921.07 = 78,104.35 : x
  2. Step 2: Convert to fraction form
    135,462.88/186,921.07 = 78,104.35/x
  3. Step 3: Cross multiply
    135,462.88x = 186,921.07 × 78,104.35
  4. Step 4: Simplify right side
    135,462.88x = 14,599,348,712.05
  5. Step 5: Solve for x
    x = 14,599,348,712.05/135,462.88
  6. Step 6: Final answer
    x = 107,773.79

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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.