Home / 139,837.84-192,975.28-76,175.68

Finding the Fourth Proportional to 139,837.84, 192,975.28 and 76,175.68

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Solution

The fourth proportional to 139,837.84, 192,975.28 and 76,175.68 is: 105,121.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,837.84 : 192,975.28 = 76,175.68 : x
  2. Step 2: Convert to fraction form
    139,837.84/192,975.28 = 76,175.68/x
  3. Step 3: Cross multiply
    139,837.84x = 192,975.28 × 76,175.68
  4. Step 4: Simplify right side
    139,837.84x = 14,700,023,177.19
  5. Step 5: Solve for x
    x = 14,700,023,177.19/139,837.84
  6. Step 6: Final answer
    x = 105,121.93

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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.