Home / 129,607.86-193,972.68-79,719.60

Finding the Fourth Proportional to 129,607.86, 193,972.68 and 79,719.60

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Solution

The fourth proportional to 129,607.86, 193,972.68 and 79,719.60 is: 119,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,607.86 : 193,972.68 = 79,719.60 : x
  2. Step 2: Convert to fraction form
    129,607.86/193,972.68 = 79,719.60/x
  3. Step 3: Cross multiply
    129,607.86x = 193,972.68 × 79,719.60
  4. Step 4: Simplify right side
    129,607.86x = 15,463,424,460.53
  5. Step 5: Solve for x
    x = 15,463,424,460.53/129,607.86
  6. Step 6: Final answer
    x = 119,309.31

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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.