Home / 135,176.48-186,468.72-78,581.60

Finding the Fourth Proportional to 135,176.48, 186,468.72 and 78,581.60

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Solution

The fourth proportional to 135,176.48, 186,468.72 and 78,581.60 is: 108,399.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,176.48 : 186,468.72 = 78,581.60 : x
  2. Step 2: Convert to fraction form
    135,176.48/186,468.72 = 78,581.60/x
  3. Step 3: Cross multiply
    135,176.48x = 186,468.72 × 78,581.60
  4. Step 4: Simplify right side
    135,176.48x = 14,653,010,367.55
  5. Step 5: Solve for x
    x = 14,653,010,367.55/135,176.48
  6. Step 6: Final answer
    x = 108,399.11

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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.