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Finding the Fourth Proportional to 243,781.04, 365,606.03 and 85,988.72

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Solution

The fourth proportional to 243,781.04, 365,606.03 and 85,988.72 is: 128,959.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,781.04 : 365,606.03 = 85,988.72 : x
  2. Step 2: Convert to fraction form
    243,781.04/365,606.03 = 85,988.72/x
  3. Step 3: Cross multiply
    243,781.04x = 365,606.03 × 85,988.72
  4. Step 4: Simplify right side
    243,781.04x = 31,437,992,286.01
  5. Step 5: Solve for x
    x = 31,437,992,286.01/243,781.04
  6. Step 6: Final answer
    x = 128,959.96

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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.