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Finding the Fourth Proportional to 162,109.80, 243,107.10 and 73,405.80

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Solution

The fourth proportional to 162,109.80, 243,107.10 and 73,405.80 is: 110,082.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,109.80 : 243,107.10 = 73,405.80 : x
  2. Step 2: Convert to fraction form
    162,109.80/243,107.10 = 73,405.80/x
  3. Step 3: Cross multiply
    162,109.80x = 243,107.10 × 73,405.80
  4. Step 4: Simplify right side
    162,109.80x = 17,845,471,161.18
  5. Step 5: Solve for x
    x = 17,845,471,161.18/162,109.80
  6. Step 6: Final answer
    x = 110,082.62

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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.