Home / 78,883.20-118,195.20-74,217.60

Finding the Fourth Proportional to 78,883.20, 118,195.20 and 74,217.60

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Solution

The fourth proportional to 78,883.20, 118,195.20 and 74,217.60 is: 111,204.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,883.20 : 118,195.20 = 74,217.60 : x
  2. Step 2: Convert to fraction form
    78,883.20/118,195.20 = 74,217.60/x
  3. Step 3: Cross multiply
    78,883.20x = 118,195.20 × 74,217.60
  4. Step 4: Simplify right side
    78,883.20x = 8,772,164,075.52
  5. Step 5: Solve for x
    x = 8,772,164,075.52/78,883.20
  6. Step 6: Final answer
    x = 111,204.47

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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.