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Finding the Fourth Proportional to 129,943, 179,321.36 and 70,327

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Solution

The fourth proportional to 129,943, 179,321.36 and 70,327 is: 97,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,943 : 179,321.36 = 70,327 : x
  2. Step 2: Convert to fraction form
    129,943/179,321.36 = 70,327/x
  3. Step 3: Cross multiply
    129,943x = 179,321.36 × 70,327
  4. Step 4: Simplify right side
    129,943x = 12,611,133,284.72
  5. Step 5: Solve for x
    x = 12,611,133,284.72/129,943
  6. Step 6: Final answer
    x = 97,051.27

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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.