Home / 121,919.58-168,156-104,951.70

Finding the Fourth Proportional to 121,919.58, 168,156 and 104,951.70

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Solution

The fourth proportional to 121,919.58, 168,156 and 104,951.70 is: 144,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,919.58 : 168,156 = 104,951.70 : x
  2. Step 2: Convert to fraction form
    121,919.58/168,156 = 104,951.70/x
  3. Step 3: Cross multiply
    121,919.58x = 168,156 × 104,951.70
  4. Step 4: Simplify right side
    121,919.58x = 17,648,258,065.20
  5. Step 5: Solve for x
    x = 17,648,258,065.20/121,919.58
  6. Step 6: Final answer
    x = 144,753.27

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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.