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Finding the Fourth Proportional to 161,958.20, 242,840.10 and 83,226.20

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Solution

The fourth proportional to 161,958.20, 242,840.10 and 83,226.20 is: 124,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,958.20 : 242,840.10 = 83,226.20 : x
  2. Step 2: Convert to fraction form
    161,958.20/242,840.10 = 83,226.20/x
  3. Step 3: Cross multiply
    161,958.20x = 242,840.10 × 83,226.20
  4. Step 4: Simplify right side
    161,958.20x = 20,210,658,730.62
  5. Step 5: Solve for x
    x = 20,210,658,730.62/161,958.20
  6. Step 6: Final answer
    x = 124,789.35

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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.