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Finding the Fourth Proportional to 161,967.40, 242,878.20 and 73,175.20

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Solution

The fourth proportional to 161,967.40, 242,878.20 and 73,175.20 is: 109,729.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,967.40 : 242,878.20 = 73,175.20 : x
  2. Step 2: Convert to fraction form
    161,967.40/242,878.20 = 73,175.20/x
  3. Step 3: Cross multiply
    161,967.40x = 242,878.20 × 73,175.20
  4. Step 4: Simplify right side
    161,967.40x = 17,772,660,860.64
  5. Step 5: Solve for x
    x = 17,772,660,860.64/161,967.40
  6. Step 6: Final answer
    x = 109,729.86

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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.