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Finding the Fourth Proportional to 129,858, 179,204.04 and 70,242

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Solution

The fourth proportional to 129,858, 179,204.04 and 70,242 is: 96,933.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,858 : 179,204.04 = 70,242 : x
  2. Step 2: Convert to fraction form
    129,858/179,204.04 = 70,242/x
  3. Step 3: Cross multiply
    129,858x = 179,204.04 × 70,242
  4. Step 4: Simplify right side
    129,858x = 12,587,650,177.68
  5. Step 5: Solve for x
    x = 12,587,650,177.68/129,858
  6. Step 6: Final answer
    x = 96,933.96

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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.