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Finding the Fourth Proportional to 118,870.74, 178,584.75 and 112,145.58

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Solution

The fourth proportional to 118,870.74, 178,584.75 and 112,145.58 is: 168,481.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,870.74 : 178,584.75 = 112,145.58 : x
  2. Step 2: Convert to fraction form
    118,870.74/178,584.75 = 112,145.58/x
  3. Step 3: Cross multiply
    118,870.74x = 178,584.75 × 112,145.58
  4. Step 4: Simplify right side
    118,870.74x = 20,027,490,367.91
  5. Step 5: Solve for x
    x = 20,027,490,367.91/118,870.74
  6. Step 6: Final answer
    x = 168,481.25

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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.