Home / 68,130.57-102,199.38-20,741.94

Finding the Fourth Proportional to 68,130.57, 102,199.38 and 20,741.94

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Solution

The fourth proportional to 68,130.57, 102,199.38 and 20,741.94 is: 31,113.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,130.57 : 102,199.38 = 20,741.94 : x
  2. Step 2: Convert to fraction form
    68,130.57/102,199.38 = 20,741.94/x
  3. Step 3: Cross multiply
    68,130.57x = 102,199.38 × 20,741.94
  4. Step 4: Simplify right side
    68,130.57x = 2,119,813,408.00
  5. Step 5: Solve for x
    x = 2,119,813,408.00/68,130.57
  6. Step 6: Final answer
    x = 31,113.98

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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.