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Finding the Fourth Proportional to 139,164.59, 208,718.17 and 68,014.19

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Solution

The fourth proportional to 139,164.59, 208,718.17 and 68,014.19 is: 102,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,164.59 : 208,718.17 = 68,014.19 : x
  2. Step 2: Convert to fraction form
    139,164.59/208,718.17 = 68,014.19/x
  3. Step 3: Cross multiply
    139,164.59x = 208,718.17 × 68,014.19
  4. Step 4: Simplify right side
    139,164.59x = 14,195,796,057.21
  5. Step 5: Solve for x
    x = 14,195,796,057.21/139,164.59
  6. Step 6: Final answer
    x = 102,007.25

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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.