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Finding the Fourth Proportional to 156,667.37, 216,201.41 and 85,047.44

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Solution

The fourth proportional to 156,667.37, 216,201.41 and 85,047.44 is: 117,365.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,667.37 : 216,201.41 = 85,047.44 : x
  2. Step 2: Convert to fraction form
    156,667.37/216,201.41 = 85,047.44/x
  3. Step 3: Cross multiply
    156,667.37x = 216,201.41 × 85,047.44
  4. Step 4: Simplify right side
    156,667.37x = 18,387,374,938.65
  5. Step 5: Solve for x
    x = 18,387,374,938.65/156,667.37
  6. Step 6: Final answer
    x = 117,365.70

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1.5x scale

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.