Home / 135,174.48-186,465.96-78,579.60

Finding the Fourth Proportional to 135,174.48, 186,465.96 and 78,579.60

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Solution

The fourth proportional to 135,174.48, 186,465.96 and 78,579.60 is: 108,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,174.48 : 186,465.96 = 78,579.60 : x
  2. Step 2: Convert to fraction form
    135,174.48/186,465.96 = 78,579.60/x
  3. Step 3: Cross multiply
    135,174.48x = 186,465.96 × 78,579.60
  4. Step 4: Simplify right side
    135,174.48x = 14,652,420,550.42
  5. Step 5: Solve for x
    x = 14,652,420,550.42/135,174.48
  6. Step 6: Final answer
    x = 108,396.35

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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.