Home / 102,778.08-154,173.84-31,692

Finding the Fourth Proportional to 102,778.08, 154,173.84 and 31,692

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Solution

The fourth proportional to 102,778.08, 154,173.84 and 31,692 is: 47,540.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,778.08 : 154,173.84 = 31,692 : x
  2. Step 2: Convert to fraction form
    102,778.08/154,173.84 = 31,692/x
  3. Step 3: Cross multiply
    102,778.08x = 154,173.84 × 31,692
  4. Step 4: Simplify right side
    102,778.08x = 4,886,077,337.28
  5. Step 5: Solve for x
    x = 4,886,077,337.28/102,778.08
  6. Step 6: Final answer
    x = 47,540.07

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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.