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Finding the Fourth Proportional to 243,132.66, 364,858.56 and 85,357.08

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Solution

The fourth proportional to 243,132.66, 364,858.56 and 85,357.08 is: 128,091.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,132.66 : 364,858.56 = 85,357.08 : x
  2. Step 2: Convert to fraction form
    243,132.66/364,858.56 = 85,357.08/x
  3. Step 3: Cross multiply
    243,132.66x = 364,858.56 × 85,357.08
  4. Step 4: Simplify right side
    243,132.66x = 31,143,261,294.60
  5. Step 5: Solve for x
    x = 31,143,261,294.60/243,132.66
  6. Step 6: Final answer
    x = 128,091.64

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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.