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Finding the Fourth Proportional to 162,067.20, 242,995.20 and 145,478.40

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Solution

The fourth proportional to 162,067.20, 242,995.20 and 145,478.40 is: 218,122.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,067.20 : 242,995.20 = 145,478.40 : x
  2. Step 2: Convert to fraction form
    162,067.20/242,995.20 = 145,478.40/x
  3. Step 3: Cross multiply
    162,067.20x = 242,995.20 × 145,478.40
  4. Step 4: Simplify right side
    162,067.20x = 35,350,552,903.68
  5. Step 5: Solve for x
    x = 35,350,552,903.68/162,067.20
  6. Step 6: Final answer
    x = 218,122.81

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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.