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Finding the Fourth Proportional to 223,325.10, 334,890.65 and 81,123.12

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Solution

The fourth proportional to 223,325.10, 334,890.65 and 81,123.12 is: 121,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,325.10 : 334,890.65 = 81,123.12 : x
  2. Step 2: Convert to fraction form
    223,325.10/334,890.65 = 81,123.12/x
  3. Step 3: Cross multiply
    223,325.10x = 334,890.65 × 81,123.12
  4. Step 4: Simplify right side
    223,325.10x = 27,167,374,589.64
  5. Step 5: Solve for x
    x = 27,167,374,589.64/223,325.10
  6. Step 6: Final answer
    x = 121,649.45

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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.