Home / 102,099.20-153,165.60-31,961.60

Finding the Fourth Proportional to 102,099.20, 153,165.60 and 31,961.60

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Solution

The fourth proportional to 102,099.20, 153,165.60 and 31,961.60 is: 47,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,099.20 : 153,165.60 = 31,961.60 : x
  2. Step 2: Convert to fraction form
    102,099.20/153,165.60 = 31,961.60/x
  3. Step 3: Cross multiply
    102,099.20x = 153,165.60 × 31,961.60
  4. Step 4: Simplify right side
    102,099.20x = 4,895,417,640.96
  5. Step 5: Solve for x
    x = 4,895,417,640.96/102,099.20
  6. Step 6: Final answer
    x = 47,947.66

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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.