Home / 139,938.22-193,114.80-79,508.94

Finding the Fourth Proportional to 139,938.22, 193,114.80 and 79,508.94

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Solution

The fourth proportional to 139,938.22, 193,114.80 and 79,508.94 is: 109,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,938.22 : 193,114.80 = 79,508.94 : x
  2. Step 2: Convert to fraction form
    139,938.22/193,114.80 = 79,508.94/x
  3. Step 3: Cross multiply
    139,938.22x = 193,114.80 × 79,508.94
  4. Step 4: Simplify right side
    139,938.22x = 15,354,353,742.11
  5. Step 5: Solve for x
    x = 15,354,353,742.11/139,938.22
  6. Step 6: Final answer
    x = 109,722.37

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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.