Home / 156,731.46-216,290.97-85,112.10

Finding the Fourth Proportional to 156,731.46, 216,290.97 and 85,112.10

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Solution

The fourth proportional to 156,731.46, 216,290.97 and 85,112.10 is: 117,455.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,731.46 : 216,290.97 = 85,112.10 : x
  2. Step 2: Convert to fraction form
    156,731.46/216,290.97 = 85,112.10/x
  3. Step 3: Cross multiply
    156,731.46x = 216,290.97 × 85,112.10
  4. Step 4: Simplify right side
    156,731.46x = 18,408,978,667.74
  5. Step 5: Solve for x
    x = 18,408,978,667.74/156,731.46
  6. Step 6: Final answer
    x = 117,455.54

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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.