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Finding the Fourth Proportional to 161,872.40, 242,735.70 and 73,080.20

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Solution

The fourth proportional to 161,872.40, 242,735.70 and 73,080.20 is: 109,587.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,872.40 : 242,735.70 = 73,080.20 : x
  2. Step 2: Convert to fraction form
    161,872.40/242,735.70 = 73,080.20/x
  3. Step 3: Cross multiply
    161,872.40x = 242,735.70 × 73,080.20
  4. Step 4: Simplify right side
    161,872.40x = 17,739,173,503.14
  5. Step 5: Solve for x
    x = 17,739,173,503.14/161,872.40
  6. Step 6: Final answer
    x = 109,587.39

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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.