Home / 205,376.19-308,099.31-91,565.29

Finding the Fourth Proportional to 205,376.19, 308,099.31 and 91,565.29

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Solution

The fourth proportional to 205,376.19, 308,099.31 and 91,565.29 is: 137,363.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,376.19 : 308,099.31 = 91,565.29 : x
  2. Step 2: Convert to fraction form
    205,376.19/308,099.31 = 91,565.29/x
  3. Step 3: Cross multiply
    205,376.19x = 308,099.31 × 91,565.29
  4. Step 4: Simplify right side
    205,376.19x = 28,211,203,631.76
  5. Step 5: Solve for x
    x = 28,211,203,631.76/205,376.19
  6. Step 6: Final answer
    x = 137,363.56

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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.