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Finding the Fourth Proportional to 161,921.80, 242,825.10 and 73,217.80

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Solution

The fourth proportional to 161,921.80, 242,825.10 and 73,217.80 is: 109,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,921.80 : 242,825.10 = 73,217.80 : x
  2. Step 2: Convert to fraction form
    161,921.80/242,825.10 = 73,217.80/x
  3. Step 3: Cross multiply
    161,921.80x = 242,825.10 × 73,217.80
  4. Step 4: Simplify right side
    161,921.80x = 17,779,119,606.78
  5. Step 5: Solve for x
    x = 17,779,119,606.78/161,921.80
  6. Step 6: Final answer
    x = 109,800.65

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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.