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Finding the Fourth Proportional to 101,099.68, 139,516.23 and 55,779.57

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Solution

The fourth proportional to 101,099.68, 139,516.23 and 55,779.57 is: 76,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,099.68 : 139,516.23 = 55,779.57 : x
  2. Step 2: Convert to fraction form
    101,099.68/139,516.23 = 55,779.57/x
  3. Step 3: Cross multiply
    101,099.68x = 139,516.23 × 55,779.57
  4. Step 4: Simplify right side
    101,099.68x = 7,782,155,317.42
  5. Step 5: Solve for x
    x = 7,782,155,317.42/101,099.68
  6. Step 6: Final answer
    x = 76,975.07

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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.