Home / 121,824.36-168,164.10-79,393.32

Finding the Fourth Proportional to 121,824.36, 168,164.10 and 79,393.32

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Solution

The fourth proportional to 121,824.36, 168,164.10 and 79,393.32 is: 109,593.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,824.36 : 168,164.10 = 79,393.32 : x
  2. Step 2: Convert to fraction form
    121,824.36/168,164.10 = 79,393.32/x
  3. Step 3: Cross multiply
    121,824.36x = 168,164.10 × 79,393.32
  4. Step 4: Simplify right side
    121,824.36x = 13,351,106,203.81
  5. Step 5: Solve for x
    x = 13,351,106,203.81/121,824.36
  6. Step 6: Final answer
    x = 109,593.07

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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.