Home / 209,930.56-289,689.68-118,063.60

Finding the Fourth Proportional to 209,930.56, 289,689.68 and 118,063.60

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Solution

The fourth proportional to 209,930.56, 289,689.68 and 118,063.60 is: 162,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,930.56 : 289,689.68 = 118,063.60 : x
  2. Step 2: Convert to fraction form
    209,930.56/289,689.68 = 118,063.60/x
  3. Step 3: Cross multiply
    209,930.56x = 289,689.68 × 118,063.60
  4. Step 4: Simplify right side
    209,930.56x = 34,201,806,503.65
  5. Step 5: Solve for x
    x = 34,201,806,503.65/209,930.56
  6. Step 6: Final answer
    x = 162,919.62

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1.5x scale

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.