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Finding the Fourth Proportional to 131,903.79, 182,036.16 and 74,523.21

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Solution

The fourth proportional to 131,903.79, 182,036.16 and 74,523.21 is: 102,847.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,903.79 : 182,036.16 = 74,523.21 : x
  2. Step 2: Convert to fraction form
    131,903.79/182,036.16 = 74,523.21/x
  3. Step 3: Cross multiply
    131,903.79x = 182,036.16 × 74,523.21
  4. Step 4: Simplify right side
    131,903.79x = 13,565,918,979.27
  5. Step 5: Solve for x
    x = 13,565,918,979.27/131,903.79
  6. Step 6: Final answer
    x = 102,847.07

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Why These Related Problems?

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