Home / 206,565.49-309,935.71-112,961.89

Finding the Fourth Proportional to 206,565.49, 309,935.71 and 112,961.89

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Solution

The fourth proportional to 206,565.49, 309,935.71 and 112,961.89 is: 169,490.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,565.49 : 309,935.71 = 112,961.89 : x
  2. Step 2: Convert to fraction form
    206,565.49/309,935.71 = 112,961.89/x
  3. Step 3: Cross multiply
    206,565.49x = 309,935.71 × 112,961.89
  4. Step 4: Simplify right side
    206,565.49x = 35,010,922,030.41
  5. Step 5: Solve for x
    x = 35,010,922,030.41/206,565.49
  6. Step 6: Final answer
    x = 169,490.67

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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.