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Finding the Fourth Proportional to 161,867.80, 242,801.70 and 144,809.20

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Solution

The fourth proportional to 161,867.80, 242,801.70 and 144,809.20 is: 217,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,867.80 : 242,801.70 = 144,809.20 : x
  2. Step 2: Convert to fraction form
    161,867.80/242,801.70 = 144,809.20/x
  3. Step 3: Cross multiply
    161,867.80x = 242,801.70 × 144,809.20
  4. Step 4: Simplify right side
    161,867.80x = 35,159,919,935.64
  5. Step 5: Solve for x
    x = 35,159,919,935.64/161,867.80
  6. Step 6: Final answer
    x = 217,213.80

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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.