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Finding the Fourth Proportional to 181,212.40, 271,948.20 and 76,106.80

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Solution

The fourth proportional to 181,212.40, 271,948.20 and 76,106.80 is: 114,214.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,212.40 : 271,948.20 = 76,106.80 : x
  2. Step 2: Convert to fraction form
    181,212.40/271,948.20 = 76,106.80/x
  3. Step 3: Cross multiply
    181,212.40x = 271,948.20 × 76,106.80
  4. Step 4: Simplify right side
    181,212.40x = 20,697,107,267.76
  5. Step 5: Solve for x
    x = 20,697,107,267.76/181,212.40
  6. Step 6: Final answer
    x = 114,214.63

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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.