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Finding the Fourth Proportional to 161,730.60, 242,682.30 and 72,997.80

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Solution

The fourth proportional to 161,730.60, 242,682.30 and 72,997.80 is: 109,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,730.60 : 242,682.30 = 72,997.80 : x
  2. Step 2: Convert to fraction form
    161,730.60/242,682.30 = 72,997.80/x
  3. Step 3: Cross multiply
    161,730.60x = 242,682.30 × 72,997.80
  4. Step 4: Simplify right side
    161,730.60x = 17,715,273,998.94
  5. Step 5: Solve for x
    x = 17,715,273,998.94/161,730.60
  6. Step 6: Final answer
    x = 109,535.70

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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.