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Finding the Fourth Proportional to 129,937.75, 179,314.11 and 70,321.75

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Solution

The fourth proportional to 129,937.75, 179,314.11 and 70,321.75 is: 97,044.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,937.75 : 179,314.11 = 70,321.75 : x
  2. Step 2: Convert to fraction form
    129,937.75/179,314.11 = 70,321.75/x
  3. Step 3: Cross multiply
    129,937.75x = 179,314.11 × 70,321.75
  4. Step 4: Simplify right side
    129,937.75x = 12,609,682,014.89
  5. Step 5: Solve for x
    x = 12,609,682,014.89/129,937.75
  6. Step 6: Final answer
    x = 97,044.02

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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.