Home / 102,922.89-142,120.76-64,694.74

Finding the Fourth Proportional to 102,922.89, 142,120.76 and 64,694.74

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Solution

The fourth proportional to 102,922.89, 142,120.76 and 64,694.74 is: 89,333.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,922.89 : 142,120.76 = 64,694.74 : x
  2. Step 2: Convert to fraction form
    102,922.89/142,120.76 = 64,694.74/x
  3. Step 3: Cross multiply
    102,922.89x = 142,120.76 × 64,694.74
  4. Step 4: Simplify right side
    102,922.89x = 9,194,465,616.80
  5. Step 5: Solve for x
    x = 9,194,465,616.80/102,922.89
  6. Step 6: Final answer
    x = 89,333.54

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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.