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Finding the Fourth Proportional to 161,521.60, 242,541.60 and 109,163.20

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Solution

The fourth proportional to 161,521.60, 242,541.60 and 109,163.20 is: 163,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,521.60 : 242,541.60 = 109,163.20 : x
  2. Step 2: Convert to fraction form
    161,521.60/242,541.60 = 109,163.20/x
  3. Step 3: Cross multiply
    161,521.60x = 242,541.60 × 109,163.20
  4. Step 4: Simplify right side
    161,521.60x = 26,476,617,189.12
  5. Step 5: Solve for x
    x = 26,476,617,189.12/161,521.60
  6. Step 6: Final answer
    x = 163,919.98

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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.