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Finding the Fourth Proportional to 139,914.01, 209,869.06 and 79,814.23

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Solution

The fourth proportional to 139,914.01, 209,869.06 and 79,814.23 is: 119,720.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,914.01 : 209,869.06 = 79,814.23 : x
  2. Step 2: Convert to fraction form
    139,914.01/209,869.06 = 79,814.23/x
  3. Step 3: Cross multiply
    139,914.01x = 209,869.06 × 79,814.23
  4. Step 4: Simplify right side
    139,914.01x = 16,750,536,952.72
  5. Step 5: Solve for x
    x = 16,750,536,952.72/139,914.01
  6. Step 6: Final answer
    x = 119,720.23

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1.5x scale

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.