Home / 118,985.20-178,132.20-115,529.20

Finding the Fourth Proportional to 118,985.20, 178,132.20 and 115,529.20

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Solution

The fourth proportional to 118,985.20, 178,132.20 and 115,529.20 is: 172,958.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,985.20 : 178,132.20 = 115,529.20 : x
  2. Step 2: Convert to fraction form
    118,985.20/178,132.20 = 115,529.20/x
  3. Step 3: Cross multiply
    118,985.20x = 178,132.20 × 115,529.20
  4. Step 4: Simplify right side
    118,985.20x = 20,579,470,560.24
  5. Step 5: Solve for x
    x = 20,579,470,560.24/118,985.20
  6. Step 6: Final answer
    x = 172,958.24

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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.