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Finding the Fourth Proportional to 139,235.96, 208,853.94 and 133,287.32

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Solution

The fourth proportional to 139,235.96, 208,853.94 and 133,287.32 is: 199,930.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235.96 : 208,853.94 = 133,287.32 : x
  2. Step 2: Convert to fraction form
    139,235.96/208,853.94 = 133,287.32/x
  3. Step 3: Cross multiply
    139,235.96x = 208,853.94 × 133,287.32
  4. Step 4: Simplify right side
    139,235.96x = 27,837,581,934.04
  5. Step 5: Solve for x
    x = 27,837,581,934.04/139,235.96
  6. Step 6: Final answer
    x = 199,930.98

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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.