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Finding the Fourth Proportional to 139,313.63, 208,846.51 and 60,384.80

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Solution

The fourth proportional to 139,313.63, 208,846.51 and 60,384.80 is: 90,523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,313.63 : 208,846.51 = 60,384.80 : x
  2. Step 2: Convert to fraction form
    139,313.63/208,846.51 = 60,384.80/x
  3. Step 3: Cross multiply
    139,313.63x = 208,846.51 × 60,384.80
  4. Step 4: Simplify right side
    139,313.63x = 12,611,154,737.05
  5. Step 5: Solve for x
    x = 12,611,154,737.05/139,313.63
  6. Step 6: Final answer
    x = 90,523.48

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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.