Home / 140,099.56-209,872.86-105,078.76

Finding the Fourth Proportional to 140,099.56, 209,872.86 and 105,078.76

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Solution

The fourth proportional to 140,099.56, 209,872.86 and 105,078.76 is: 157,410.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,099.56 : 209,872.86 = 105,078.76 : x
  2. Step 2: Convert to fraction form
    140,099.56/209,872.86 = 105,078.76/x
  3. Step 3: Cross multiply
    140,099.56x = 209,872.86 × 105,078.76
  4. Step 4: Simplify right side
    140,099.56x = 22,053,179,886.45
  5. Step 5: Solve for x
    x = 22,053,179,886.45/140,099.56
  6. Step 6: Final answer
    x = 157,410.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.