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Finding the Fourth Proportional to 186,874.78, 257,847.78 and 118,867

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Solution

The fourth proportional to 186,874.78, 257,847.78 and 118,867 is: 164,011.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,874.78 : 257,847.78 = 118,867 : x
  2. Step 2: Convert to fraction form
    186,874.78/257,847.78 = 118,867/x
  3. Step 3: Cross multiply
    186,874.78x = 257,847.78 × 118,867
  4. Step 4: Simplify right side
    186,874.78x = 30,649,592,065.26
  5. Step 5: Solve for x
    x = 30,649,592,065.26/186,874.78
  6. Step 6: Final answer
    x = 164,011.39

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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.