Home / 209,454.26-289,025-118,781.24

Finding the Fourth Proportional to 209,454.26, 289,025 and 118,781.24

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Solution

The fourth proportional to 209,454.26, 289,025 and 118,781.24 is: 163,905.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,454.26 : 289,025 = 118,781.24 : x
  2. Step 2: Convert to fraction form
    209,454.26/289,025 = 118,781.24/x
  3. Step 3: Cross multiply
    209,454.26x = 289,025 × 118,781.24
  4. Step 4: Simplify right side
    209,454.26x = 34,330,747,891
  5. Step 5: Solve for x
    x = 34,330,747,891/209,454.26
  6. Step 6: Final answer
    x = 163,905.70

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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.