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Finding the Fourth Proportional to 209,508.95, 289,128.90 and 118,868.73

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Solution

The fourth proportional to 209,508.95, 289,128.90 and 118,868.73 is: 164,042.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,508.95 : 289,128.90 = 118,868.73 : x
  2. Step 2: Convert to fraction form
    209,508.95/289,128.90 = 118,868.73/x
  3. Step 3: Cross multiply
    209,508.95x = 289,128.90 × 118,868.73
  4. Step 4: Simplify right side
    209,508.95x = 34,368,385,149.30
  5. Step 5: Solve for x
    x = 34,368,385,149.30/209,508.95
  6. Step 6: Final answer
    x = 164,042.57

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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.