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Finding the Fourth Proportional to 212,667.96, 318,701.03 and 117,939.81

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Solution

The fourth proportional to 212,667.96, 318,701.03 and 117,939.81 is: 176,742.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,667.96 : 318,701.03 = 117,939.81 : x
  2. Step 2: Convert to fraction form
    212,667.96/318,701.03 = 117,939.81/x
  3. Step 3: Cross multiply
    212,667.96x = 318,701.03 × 117,939.81
  4. Step 4: Simplify right side
    212,667.96x = 37,587,538,335.31
  5. Step 5: Solve for x
    x = 37,587,538,335.31/212,667.96
  6. Step 6: Final answer
    x = 176,742.84

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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.