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Finding the Fourth Proportional to 156,739.39, 216,298.41 and 85,119.92

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Solution

The fourth proportional to 156,739.39, 216,298.41 and 85,119.92 is: 117,464.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,739.39 : 216,298.41 = 85,119.92 : x
  2. Step 2: Convert to fraction form
    156,739.39/216,298.41 = 85,119.92/x
  3. Step 3: Cross multiply
    156,739.39x = 216,298.41 × 85,119.92
  4. Step 4: Simplify right side
    156,739.39x = 18,411,303,355.33
  5. Step 5: Solve for x
    x = 18,411,303,355.33/156,739.39
  6. Step 6: Final answer
    x = 117,464.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.