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Finding the Fourth Proportional to 119,189.12, 164,485.12 and 65,479.04

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Solution

The fourth proportional to 119,189.12, 164,485.12 and 65,479.04 is: 90,363.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,189.12 : 164,485.12 = 65,479.04 : x
  2. Step 2: Convert to fraction form
    119,189.12/164,485.12 = 65,479.04/x
  3. Step 3: Cross multiply
    119,189.12x = 164,485.12 × 65,479.04
  4. Step 4: Simplify right side
    119,189.12x = 10,770,327,751.88
  5. Step 5: Solve for x
    x = 10,770,327,751.88/119,189.12
  6. Step 6: Final answer
    x = 90,363.35

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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.