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Finding the Fourth Proportional to 162,666.28, 243,900.54 and 67,781.80

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Solution

The fourth proportional to 162,666.28, 243,900.54 and 67,781.80 is: 101,631.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,666.28 : 243,900.54 = 67,781.80 : x
  2. Step 2: Convert to fraction form
    162,666.28/243,900.54 = 67,781.80/x
  3. Step 3: Cross multiply
    162,666.28x = 243,900.54 × 67,781.80
  4. Step 4: Simplify right side
    162,666.28x = 16,532,017,622.17
  5. Step 5: Solve for x
    x = 16,532,017,622.17/162,666.28
  6. Step 6: Final answer
    x = 101,631.50

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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.