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Finding the Fourth Proportional to 100,779.44, 139,080.30 and 58,329.80

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Solution

The fourth proportional to 100,779.44, 139,080.30 and 58,329.80 is: 80,497.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,779.44 : 139,080.30 = 58,329.80 : x
  2. Step 2: Convert to fraction form
    100,779.44/139,080.30 = 58,329.80/x
  3. Step 3: Cross multiply
    100,779.44x = 139,080.30 × 58,329.80
  4. Step 4: Simplify right side
    100,779.44x = 8,112,526,082.94
  5. Step 5: Solve for x
    x = 8,112,526,082.94/100,779.44
  6. Step 6: Final answer
    x = 80,497.83

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1.5x scale

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.