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Finding the Fourth Proportional to 118,528.40, 177,792.60 and 74,205.20

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Solution

The fourth proportional to 118,528.40, 177,792.60 and 74,205.20 is: 111,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,528.40 : 177,792.60 = 74,205.20 : x
  2. Step 2: Convert to fraction form
    118,528.40/177,792.60 = 74,205.20/x
  3. Step 3: Cross multiply
    118,528.40x = 177,792.60 × 74,205.20
  4. Step 4: Simplify right side
    118,528.40x = 13,193,135,441.52
  5. Step 5: Solve for x
    x = 13,193,135,441.52/118,528.40
  6. Step 6: Final answer
    x = 111,307.80

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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.