Home / 161,940.30-242,910.45-128,114.70

Finding the Fourth Proportional to 161,940.30, 242,910.45 and 128,114.70

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Solution

The fourth proportional to 161,940.30, 242,910.45 and 128,114.70 is: 192,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,940.30 : 242,910.45 = 128,114.70 : x
  2. Step 2: Convert to fraction form
    161,940.30/242,910.45 = 128,114.70/x
  3. Step 3: Cross multiply
    161,940.30x = 242,910.45 × 128,114.70
  4. Step 4: Simplify right side
    161,940.30x = 31,120,399,428.62
  5. Step 5: Solve for x
    x = 31,120,399,428.62/161,940.30
  6. Step 6: Final answer
    x = 192,172.05

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1.5x scale

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.