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Finding the Fourth Proportional to 108,111.60, 161,778.60 and 73,119.60

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Solution

The fourth proportional to 108,111.60, 161,778.60 and 73,119.60 is: 109,416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,111.60 : 161,778.60 = 73,119.60 : x
  2. Step 2: Convert to fraction form
    108,111.60/161,778.60 = 73,119.60/x
  3. Step 3: Cross multiply
    108,111.60x = 161,778.60 × 73,119.60
  4. Step 4: Simplify right side
    108,111.60x = 11,829,186,520.56
  5. Step 5: Solve for x
    x = 11,829,186,520.56/108,111.60
  6. Step 6: Final answer
    x = 109,416.44

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1.5x scale

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.