Home / 135,047.20-186,327.20-77,683.52

Finding the Fourth Proportional to 135,047.20, 186,327.20 and 77,683.52

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Solution

The fourth proportional to 135,047.20, 186,327.20 and 77,683.52 is: 107,181.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,047.20 : 186,327.20 = 77,683.52 : x
  2. Step 2: Convert to fraction form
    135,047.20/186,327.20 = 77,683.52/x
  3. Step 3: Cross multiply
    135,047.20x = 186,327.20 × 77,683.52
  4. Step 4: Simplify right side
    135,047.20x = 14,474,552,767.74
  5. Step 5: Solve for x
    x = 14,474,552,767.74/135,047.20
  6. Step 6: Final answer
    x = 107,181.44

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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.