Home / 138,828.87-191,583.86-75,166.65

Finding the Fourth Proportional to 138,828.87, 191,583.86 and 75,166.65

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Solution

The fourth proportional to 138,828.87, 191,583.86 and 75,166.65 is: 103,729.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.87 : 191,583.86 = 75,166.65 : x
  2. Step 2: Convert to fraction form
    138,828.87/191,583.86 = 75,166.65/x
  3. Step 3: Cross multiply
    138,828.87x = 191,583.86 × 75,166.65
  4. Step 4: Simplify right side
    138,828.87x = 14,400,716,574.44
  5. Step 5: Solve for x
    x = 14,400,716,574.44/138,828.87
  6. Step 6: Final answer
    x = 103,729.98

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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.