Home / 103,924.51-143,340.09-79,450.63

Finding the Fourth Proportional to 103,924.51, 143,340.09 and 79,450.63

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Solution

The fourth proportional to 103,924.51, 143,340.09 and 79,450.63 is: 109,583.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,924.51 : 143,340.09 = 79,450.63 : x
  2. Step 2: Convert to fraction form
    103,924.51/143,340.09 = 79,450.63/x
  3. Step 3: Cross multiply
    103,924.51x = 143,340.09 × 79,450.63
  4. Step 4: Simplify right side
    103,924.51x = 11,388,460,454.76
  5. Step 5: Solve for x
    x = 11,388,460,454.76/103,924.51
  6. Step 6: Final answer
    x = 109,583.97

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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.