Home / 136,514.84-188,394.18-78,381.32

Finding the Fourth Proportional to 136,514.84, 188,394.18 and 78,381.32

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Solution

The fourth proportional to 136,514.84, 188,394.18 and 78,381.32 is: 108,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,514.84 : 188,394.18 = 78,381.32 : x
  2. Step 2: Convert to fraction form
    136,514.84/188,394.18 = 78,381.32/x
  3. Step 3: Cross multiply
    136,514.84x = 188,394.18 × 78,381.32
  4. Step 4: Simplify right side
    136,514.84x = 14,766,584,508.72
  5. Step 5: Solve for x
    x = 14,766,584,508.72/136,514.84
  6. Step 6: Final answer
    x = 108,168.35

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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.