Home / 87,457.60-131,186.40-69,961.60

Finding the Fourth Proportional to 87,457.60, 131,186.40 and 69,961.60

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Solution

The fourth proportional to 87,457.60, 131,186.40 and 69,961.60 is: 104,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,457.60 : 131,186.40 = 69,961.60 : x
  2. Step 2: Convert to fraction form
    87,457.60/131,186.40 = 69,961.60/x
  3. Step 3: Cross multiply
    87,457.60x = 131,186.40 × 69,961.60
  4. Step 4: Simplify right side
    87,457.60x = 9,178,010,442.24
  5. Step 5: Solve for x
    x = 9,178,010,442.24/87,457.60
  6. Step 6: Final answer
    x = 104,942.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.