Home / 209,285.41-313,921.06-90,956.76

Finding the Fourth Proportional to 209,285.41, 313,921.06 and 90,956.76

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Solution

The fourth proportional to 209,285.41, 313,921.06 and 90,956.76 is: 136,432.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,285.41 : 313,921.06 = 90,956.76 : x
  2. Step 2: Convert to fraction form
    209,285.41/313,921.06 = 90,956.76/x
  3. Step 3: Cross multiply
    209,285.41x = 313,921.06 × 90,956.76
  4. Step 4: Simplify right side
    209,285.41x = 28,553,242,513.37
  5. Step 5: Solve for x
    x = 28,553,242,513.37/209,285.41
  6. Step 6: Final answer
    x = 136,432.07

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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.