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Finding the Fourth Proportional to 162,006.20, 243,009.30 and 142,979.30

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Solution

The fourth proportional to 162,006.20, 243,009.30 and 142,979.30 is: 214,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,006.20 : 243,009.30 = 142,979.30 : x
  2. Step 2: Convert to fraction form
    162,006.20/243,009.30 = 142,979.30/x
  3. Step 3: Cross multiply
    162,006.20x = 243,009.30 × 142,979.30
  4. Step 4: Simplify right side
    162,006.20x = 34,745,299,607.49
  5. Step 5: Solve for x
    x = 34,745,299,607.49/162,006.20
  6. Step 6: Final answer
    x = 214,468.95

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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.