Home / 102,399.08-141,311.36-57,079.94

Finding the Fourth Proportional to 102,399.08, 141,311.36 and 57,079.94

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Solution

The fourth proportional to 102,399.08, 141,311.36 and 57,079.94 is: 78,770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,399.08 : 141,311.36 = 57,079.94 : x
  2. Step 2: Convert to fraction form
    102,399.08/141,311.36 = 57,079.94/x
  3. Step 3: Cross multiply
    102,399.08x = 141,311.36 × 57,079.94
  4. Step 4: Simplify right side
    102,399.08x = 8,066,043,950.12
  5. Step 5: Solve for x
    x = 8,066,043,950.12/102,399.08
  6. Step 6: Final answer
    x = 78,770.67

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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.