Home / 108,509.40-162,772.20-38,379.60

Finding the Fourth Proportional to 108,509.40, 162,772.20 and 38,379.60

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Solution

The fourth proportional to 108,509.40, 162,772.20 and 38,379.60 is: 57,572.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,509.40 : 162,772.20 = 38,379.60 : x
  2. Step 2: Convert to fraction form
    108,509.40/162,772.20 = 38,379.60/x
  3. Step 3: Cross multiply
    108,509.40x = 162,772.20 × 38,379.60
  4. Step 4: Simplify right side
    108,509.40x = 6,247,131,927.12
  5. Step 5: Solve for x
    x = 6,247,131,927.12/108,509.40
  6. Step 6: Final answer
    x = 57,572.26

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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.