Home / 139,439.09-192,428.03-75,776.94

Finding the Fourth Proportional to 139,439.09, 192,428.03 and 75,776.94

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Solution

The fourth proportional to 139,439.09, 192,428.03 and 75,776.94 is: 104,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,439.09 : 192,428.03 = 75,776.94 : x
  2. Step 2: Convert to fraction form
    139,439.09/192,428.03 = 75,776.94/x
  3. Step 3: Cross multiply
    139,439.09x = 192,428.03 × 75,776.94
  4. Step 4: Simplify right side
    139,439.09x = 14,581,606,904.74
  5. Step 5: Solve for x
    x = 14,581,606,904.74/139,439.09
  6. Step 6: Final answer
    x = 104,573.31

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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.