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Finding the Fourth Proportional to 129,795.60, 194,758.20 and 73,678.80

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Solution

The fourth proportional to 129,795.60, 194,758.20 and 73,678.80 is: 110,554.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,795.60 : 194,758.20 = 73,678.80 : x
  2. Step 2: Convert to fraction form
    129,795.60/194,758.20 = 73,678.80/x
  3. Step 3: Cross multiply
    129,795.60x = 194,758.20 × 73,678.80
  4. Step 4: Simplify right side
    129,795.60x = 14,349,550,466.16
  5. Step 5: Solve for x
    x = 14,349,550,466.16/129,795.60
  6. Step 6: Final answer
    x = 110,554.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.