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Finding the Fourth Proportional to 102,950.40, 154,432.80 and 43,779.36

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Solution

The fourth proportional to 102,950.40, 154,432.80 and 43,779.36 is: 65,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,950.40 : 154,432.80 = 43,779.36 : x
  2. Step 2: Convert to fraction form
    102,950.40/154,432.80 = 43,779.36/x
  3. Step 3: Cross multiply
    102,950.40x = 154,432.80 × 43,779.36
  4. Step 4: Simplify right side
    102,950.40x = 6,760,969,147.01
  5. Step 5: Solve for x
    x = 6,760,969,147.01/102,950.40
  6. Step 6: Final answer
    x = 65,672.10

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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.