Home / 139,345.85-192,269.05-84,861.50

Finding the Fourth Proportional to 139,345.85, 192,269.05 and 84,861.50

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Solution

The fourth proportional to 139,345.85, 192,269.05 and 84,861.50 is: 117,091.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,345.85 : 192,269.05 = 84,861.50 : x
  2. Step 2: Convert to fraction form
    139,345.85/192,269.05 = 84,861.50/x
  3. Step 3: Cross multiply
    139,345.85x = 192,269.05 × 84,861.50
  4. Step 4: Simplify right side
    139,345.85x = 16,316,238,813.08
  5. Step 5: Solve for x
    x = 16,316,238,813.08/139,345.85
  6. Step 6: Final answer
    x = 117,091.67

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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.