Home / 122,308.01-168,628.81-79,211.36

Finding the Fourth Proportional to 122,308.01, 168,628.81 and 79,211.36

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Solution

The fourth proportional to 122,308.01, 168,628.81 and 79,211.36 is: 109,210.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,308.01 : 168,628.81 = 79,211.36 : x
  2. Step 2: Convert to fraction form
    122,308.01/168,628.81 = 79,211.36/x
  3. Step 3: Cross multiply
    122,308.01x = 168,628.81 × 79,211.36
  4. Step 4: Simplify right side
    122,308.01x = 13,357,317,375.28
  5. Step 5: Solve for x
    x = 13,357,317,375.28/122,308.01
  6. Step 6: Final answer
    x = 109,210.49

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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.