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Finding the Fourth Proportional to 129,704.34, 179,019.81 and 81,927.30

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Solution

The fourth proportional to 129,704.34, 179,019.81 and 81,927.30 is: 113,077.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,704.34 : 179,019.81 = 81,927.30 : x
  2. Step 2: Convert to fraction form
    129,704.34/179,019.81 = 81,927.30/x
  3. Step 3: Cross multiply
    129,704.34x = 179,019.81 × 81,927.30
  4. Step 4: Simplify right side
    129,704.34x = 14,666,609,679.81
  5. Step 5: Solve for x
    x = 14,666,609,679.81/129,704.34
  6. Step 6: Final answer
    x = 113,077.25

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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.