Home / 107,845.92-161,670.32-91,312.48

Finding the Fourth Proportional to 107,845.92, 161,670.32 and 91,312.48

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Solution

The fourth proportional to 107,845.92, 161,670.32 and 91,312.48 is: 136,885.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,845.92 : 161,670.32 = 91,312.48 : x
  2. Step 2: Convert to fraction form
    107,845.92/161,670.32 = 91,312.48/x
  3. Step 3: Cross multiply
    107,845.92x = 161,670.32 × 91,312.48
  4. Step 4: Simplify right side
    107,845.92x = 14,762,517,861.59
  5. Step 5: Solve for x
    x = 14,762,517,861.59/107,845.92
  6. Step 6: Final answer
    x = 136,885.27

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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.