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Finding the Fourth Proportional to 162,651.70, 243,965.40 and 67,857.40

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Solution

The fourth proportional to 162,651.70, 243,965.40 and 67,857.40 is: 101,781.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,651.70 : 243,965.40 = 67,857.40 : x
  2. Step 2: Convert to fraction form
    162,651.70/243,965.40 = 67,857.40/x
  3. Step 3: Cross multiply
    162,651.70x = 243,965.40 × 67,857.40
  4. Step 4: Simplify right side
    162,651.70x = 16,554,857,733.96
  5. Step 5: Solve for x
    x = 16,554,857,733.96/162,651.70
  6. Step 6: Final answer
    x = 101,781.03

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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.