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Finding the Fourth Proportional to 203,864.59, 305,773.11 and 54,116.51

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Solution

The fourth proportional to 203,864.59, 305,773.11 and 54,116.51 is: 81,168.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,864.59 : 305,773.11 = 54,116.51 : x
  2. Step 2: Convert to fraction form
    203,864.59/305,773.11 = 54,116.51/x
  3. Step 3: Cross multiply
    203,864.59x = 305,773.11 × 54,116.51
  4. Step 4: Simplify right side
    203,864.59x = 16,547,374,329.48
  5. Step 5: Solve for x
    x = 16,547,374,329.48/203,864.59
  6. Step 6: Final answer
    x = 81,168.46

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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.