Home / 135,175.48-186,467.34-78,580.60

Finding the Fourth Proportional to 135,175.48, 186,467.34 and 78,580.60

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Solution

The fourth proportional to 135,175.48, 186,467.34 and 78,580.60 is: 108,397.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,175.48 : 186,467.34 = 78,580.60 : x
  2. Step 2: Convert to fraction form
    135,175.48/186,467.34 = 78,580.60/x
  3. Step 3: Cross multiply
    135,175.48x = 186,467.34 × 78,580.60
  4. Step 4: Simplify right side
    135,175.48x = 14,652,715,457.60
  5. Step 5: Solve for x
    x = 14,652,715,457.60/135,175.48
  6. Step 6: Final answer
    x = 108,397.73

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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.