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Finding the Fourth Proportional to 103,271.55, 154,914.74 and 43,239.61

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Solution

The fourth proportional to 103,271.55, 154,914.74 and 43,239.61 is: 64,862.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,271.55 : 154,914.74 = 43,239.61 : x
  2. Step 2: Convert to fraction form
    103,271.55/154,914.74 = 43,239.61/x
  3. Step 3: Cross multiply
    103,271.55x = 154,914.74 × 43,239.61
  4. Step 4: Simplify right side
    103,271.55x = 6,698,452,940.85
  5. Step 5: Solve for x
    x = 6,698,452,940.85/103,271.55
  6. Step 6: Final answer
    x = 64,862.52

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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.