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Finding the Fourth Proportional to 139,347.85, 192,271.81 and 84,863.50

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Solution

The fourth proportional to 139,347.85, 192,271.81 and 84,863.50 is: 117,094.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,347.85 : 192,271.81 = 84,863.50 : x
  2. Step 2: Convert to fraction form
    139,347.85/192,271.81 = 84,863.50/x
  3. Step 3: Cross multiply
    139,347.85x = 192,271.81 × 84,863.50
  4. Step 4: Simplify right side
    139,347.85x = 16,316,858,747.94
  5. Step 5: Solve for x
    x = 16,316,858,747.94/139,347.85
  6. Step 6: Final answer
    x = 117,094.44

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1.5x scale

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.