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Finding the Fourth Proportional to 159,361, 219,918.18 and 88,705

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Solution

The fourth proportional to 159,361, 219,918.18 and 88,705 is: 122,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,361 : 219,918.18 = 88,705 : x
  2. Step 2: Convert to fraction form
    159,361/219,918.18 = 88,705/x
  3. Step 3: Cross multiply
    159,361x = 219,918.18 × 88,705
  4. Step 4: Simplify right side
    159,361x = 19,507,842,156.90
  5. Step 5: Solve for x
    x = 19,507,842,156.90/159,361
  6. Step 6: Final answer
    x = 122,412.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.