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Finding the Fourth Proportional to 139,230.98, 208,813.02 and 64,279.12

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Solution

The fourth proportional to 139,230.98, 208,813.02 and 64,279.12 is: 96,403.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,230.98 : 208,813.02 = 64,279.12 : x
  2. Step 2: Convert to fraction form
    139,230.98/208,813.02 = 64,279.12/x
  3. Step 3: Cross multiply
    139,230.98x = 208,813.02 × 64,279.12
  4. Step 4: Simplify right side
    139,230.98x = 13,422,317,160.16
  5. Step 5: Solve for x
    x = 13,422,317,160.16/139,230.98
  6. Step 6: Final answer
    x = 96,403.23

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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.