Home / 121,383,042.28-167,521,579.60-74,371,314.70

Finding the Fourth Proportional to 121,383,042.28, 167,521,579.60 and 74,371,314.70

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Solution

The fourth proportional to 121,383,042.28, 167,521,579.60 and 74,371,314.70 is: 102,640,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,383,042.28 : 167,521,579.60 = 74,371,314.70 : x
  2. Step 2: Convert to fraction form
    121,383,042.28/167,521,579.60 = 74,371,314.70/x
  3. Step 3: Cross multiply
    121,383,042.28x = 167,521,579.60 × 74,371,314.70
  4. Step 4: Simplify right side
    121,383,042.28x = 12,458,800,115,472,700
  5. Step 5: Solve for x
    x = 12,458,800,115,472,700/121,383,042.28
  6. Step 6: Final answer
    x = 102,640,367.89

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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.