Home / 135,092.79-186,451.20-78,536.97

Finding the Fourth Proportional to 135,092.79, 186,451.20 and 78,536.97

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Solution

The fourth proportional to 135,092.79, 186,451.20 and 78,536.97 is: 108,394.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,092.79 : 186,451.20 = 78,536.97 : x
  2. Step 2: Convert to fraction form
    135,092.79/186,451.20 = 78,536.97/x
  3. Step 3: Cross multiply
    135,092.79x = 186,451.20 × 78,536.97
  4. Step 4: Simplify right side
    135,092.79x = 14,643,312,300.86
  5. Step 5: Solve for x
    x = 14,643,312,300.86/135,092.79
  6. Step 6: Final answer
    x = 108,394.48

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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.