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Finding the Fourth Proportional to 162,099.20, 243,043.20 and 145,510.40

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Solution

The fourth proportional to 162,099.20, 243,043.20 and 145,510.40 is: 218,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,099.20 : 243,043.20 = 145,510.40 : x
  2. Step 2: Convert to fraction form
    162,099.20/243,043.20 = 145,510.40/x
  3. Step 3: Cross multiply
    162,099.20x = 243,043.20 × 145,510.40
  4. Step 4: Simplify right side
    162,099.20x = 35,365,313,249.28
  5. Step 5: Solve for x
    x = 35,365,313,249.28/162,099.20
  6. Step 6: Final answer
    x = 218,170.81

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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.