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Finding the Fourth Proportional to 243,544.88, 364,996.55 and 103,129.76

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Solution

The fourth proportional to 243,544.88, 364,996.55 and 103,129.76 is: 154,558.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,544.88 : 364,996.55 = 103,129.76 : x
  2. Step 2: Convert to fraction form
    243,544.88/364,996.55 = 103,129.76/x
  3. Step 3: Cross multiply
    243,544.88x = 364,996.55 × 103,129.76
  4. Step 4: Simplify right side
    243,544.88x = 37,642,005,035.17
  5. Step 5: Solve for x
    x = 37,642,005,035.17/243,544.88
  6. Step 6: Final answer
    x = 154,558.81

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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.