Home / 78,403.26-118,183.53-73,830.90

Finding the Fourth Proportional to 78,403.26, 118,183.53 and 73,830.90

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Solution

The fourth proportional to 78,403.26, 118,183.53 and 73,830.90 is: 111,291.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,403.26 : 118,183.53 = 73,830.90 : x
  2. Step 2: Convert to fraction form
    78,403.26/118,183.53 = 73,830.90/x
  3. Step 3: Cross multiply
    78,403.26x = 118,183.53 × 73,830.90
  4. Step 4: Simplify right side
    78,403.26x = 8,725,596,385.08
  5. Step 5: Solve for x
    x = 8,725,596,385.08/78,403.26
  6. Step 6: Final answer
    x = 111,291.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.