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Finding the Fourth Proportional to 139,232.84, 192,121.62 and 82,666.76

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Solution

The fourth proportional to 139,232.84, 192,121.62 and 82,666.76 is: 114,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,232.84 : 192,121.62 = 82,666.76 : x
  2. Step 2: Convert to fraction form
    139,232.84/192,121.62 = 82,666.76/x
  3. Step 3: Cross multiply
    139,232.84x = 192,121.62 × 82,666.76
  4. Step 4: Simplify right side
    139,232.84x = 15,882,071,851.35
  5. Step 5: Solve for x
    x = 15,882,071,851.35/139,232.84
  6. Step 6: Final answer
    x = 114,068.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.