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Finding the Fourth Proportional to 139,063, 208,601 and 40,567

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Solution

The fourth proportional to 139,063, 208,601 and 40,567 is: 60,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063 : 208,601 = 40,567 : x
  2. Step 2: Convert to fraction form
    139,063/208,601 = 40,567/x
  3. Step 3: Cross multiply
    139,063x = 208,601 × 40,567
  4. Step 4: Simplify right side
    139,063x = 8,462,316,767
  5. Step 5: Solve for x
    x = 8,462,316,767/139,063
  6. Step 6: Final answer
    x = 60,852.40

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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.