Home / 209,876.45-289,639.78-118,024.65

Finding the Fourth Proportional to 209,876.45, 289,639.78 and 118,024.65

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Solution

The fourth proportional to 209,876.45, 289,639.78 and 118,024.65 is: 162,879.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,876.45 : 289,639.78 = 118,024.65 : x
  2. Step 2: Convert to fraction form
    209,876.45/289,639.78 = 118,024.65/x
  3. Step 3: Cross multiply
    209,876.45x = 289,639.78 × 118,024.65
  4. Step 4: Simplify right side
    209,876.45x = 34,184,632,943.25
  5. Step 5: Solve for x
    x = 34,184,632,943.25/209,876.45
  6. Step 6: Final answer
    x = 162,879.79

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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.