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Finding the Fourth Proportional to 162,142.40, 243,098.40 and 73,438.40

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Solution

The fourth proportional to 162,142.40, 243,098.40 and 73,438.40 is: 110,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,142.40 : 243,098.40 = 73,438.40 : x
  2. Step 2: Convert to fraction form
    162,142.40/243,098.40 = 73,438.40/x
  3. Step 3: Cross multiply
    162,142.40x = 243,098.40 × 73,438.40
  4. Step 4: Simplify right side
    162,142.40x = 17,852,757,538.56
  5. Step 5: Solve for x
    x = 17,852,757,538.56/162,142.40
  6. Step 6: Final answer
    x = 110,105.42

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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.