Home / 209,565.05-289,191.72-118,915.61

Finding the Fourth Proportional to 209,565.05, 289,191.72 and 118,915.61

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Solution

The fourth proportional to 209,565.05, 289,191.72 and 118,915.61 is: 164,098.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,565.05 : 289,191.72 = 118,915.61 : x
  2. Step 2: Convert to fraction form
    209,565.05/289,191.72 = 118,915.61/x
  3. Step 3: Cross multiply
    209,565.05x = 289,191.72 × 118,915.61
  4. Step 4: Simplify right side
    209,565.05x = 34,389,409,790.75
  5. Step 5: Solve for x
    x = 34,389,409,790.75/209,565.05
  6. Step 6: Final answer
    x = 164,098.97

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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.