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Finding the Fourth Proportional to 119,512.44, 164,978.18 and 85,079.40

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Solution

The fourth proportional to 119,512.44, 164,978.18 and 85,079.40 is: 117,445.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,512.44 : 164,978.18 = 85,079.40 : x
  2. Step 2: Convert to fraction form
    119,512.44/164,978.18 = 85,079.40/x
  3. Step 3: Cross multiply
    119,512.44x = 164,978.18 × 85,079.40
  4. Step 4: Simplify right side
    119,512.44x = 14,036,244,567.49
  5. Step 5: Solve for x
    x = 14,036,244,567.49/119,512.44
  6. Step 6: Final answer
    x = 117,445.89

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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.