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Finding the Fourth Proportional to 100,855.53, 151,283.16 and 29,779.11

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Solution

The fourth proportional to 100,855.53, 151,283.16 and 29,779.11 is: 44,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,855.53 : 151,283.16 = 29,779.11 : x
  2. Step 2: Convert to fraction form
    100,855.53/151,283.16 = 29,779.11/x
  3. Step 3: Cross multiply
    100,855.53x = 151,283.16 × 29,779.11
  4. Step 4: Simplify right side
    100,855.53x = 4,505,077,862.79
  5. Step 5: Solve for x
    x = 4,505,077,862.79/100,855.53
  6. Step 6: Final answer
    x = 44,668.63

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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.