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Finding the Fourth Proportional to 118,794.32, 178,166.40 and 70,784.21

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Solution

The fourth proportional to 118,794.32, 178,166.40 and 70,784.21 is: 106,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.32 : 178,166.40 = 70,784.21 : x
  2. Step 2: Convert to fraction form
    118,794.32/178,166.40 = 70,784.21/x
  3. Step 3: Cross multiply
    118,794.32x = 178,166.40 × 70,784.21
  4. Step 4: Simplify right side
    118,794.32x = 12,611,367,872.54
  5. Step 5: Solve for x
    x = 12,611,367,872.54/118,794.32
  6. Step 6: Final answer
    x = 106,161.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.