Home / 136,408.04-188,199.78-76,780.52

Finding the Fourth Proportional to 136,408.04, 188,199.78 and 76,780.52

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Solution

The fourth proportional to 136,408.04, 188,199.78 and 76,780.52 is: 105,932.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,408.04 : 188,199.78 = 76,780.52 : x
  2. Step 2: Convert to fraction form
    136,408.04/188,199.78 = 76,780.52/x
  3. Step 3: Cross multiply
    136,408.04x = 188,199.78 × 76,780.52
  4. Step 4: Simplify right side
    136,408.04x = 14,450,076,972.29
  5. Step 5: Solve for x
    x = 14,450,076,972.29/136,408.04
  6. Step 6: Final answer
    x = 105,932.74

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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.