Home / 156,728.12-216,287.39-88,743.30

Finding the Fourth Proportional to 156,728.12, 216,287.39 and 88,743.30

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Solution

The fourth proportional to 156,728.12, 216,287.39 and 88,743.30 is: 122,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,728.12 : 216,287.39 = 88,743.30 : x
  2. Step 2: Convert to fraction form
    156,728.12/216,287.39 = 88,743.30/x
  3. Step 3: Cross multiply
    156,728.12x = 216,287.39 × 88,743.30
  4. Step 4: Simplify right side
    156,728.12x = 19,194,056,293.27
  5. Step 5: Solve for x
    x = 19,194,056,293.27/156,728.12
  6. Step 6: Final answer
    x = 122,467.21

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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.