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Finding the Fourth Proportional to 129,650.75, 178,918.04 and 70,034.75

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Solution

The fourth proportional to 129,650.75, 178,918.04 and 70,034.75 is: 96,647.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,650.75 : 178,918.04 = 70,034.75 : x
  2. Step 2: Convert to fraction form
    129,650.75/178,918.04 = 70,034.75/x
  3. Step 3: Cross multiply
    129,650.75x = 178,918.04 × 70,034.75
  4. Step 4: Simplify right side
    129,650.75x = 12,530,480,201.89
  5. Step 5: Solve for x
    x = 12,530,480,201.89/129,650.75
  6. Step 6: Final answer
    x = 96,647.96

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1.5x scale

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.