Home / 156,825.60-235,238.40-68,121.60

Finding the Fourth Proportional to 156,825.60, 235,238.40 and 68,121.60

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Solution

The fourth proportional to 156,825.60, 235,238.40 and 68,121.60 is: 102,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,825.60 : 235,238.40 = 68,121.60 : x
  2. Step 2: Convert to fraction form
    156,825.60/235,238.40 = 68,121.60/x
  3. Step 3: Cross multiply
    156,825.60x = 235,238.40 × 68,121.60
  4. Step 4: Simplify right side
    156,825.60x = 16,024,816,189.44
  5. Step 5: Solve for x
    x = 16,024,816,189.44/156,825.60
  6. Step 6: Final answer
    x = 102,182.40

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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.