Home / 86,255.68-118,396.88-76,613.44

Finding the Fourth Proportional to 86,255.68, 118,396.88 and 76,613.44

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Solution

The fourth proportional to 86,255.68, 118,396.88 and 76,613.44 is: 105,161.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,255.68 : 118,396.88 = 76,613.44 : x
  2. Step 2: Convert to fraction form
    86,255.68/118,396.88 = 76,613.44/x
  3. Step 3: Cross multiply
    86,255.68x = 118,396.88 × 76,613.44
  4. Step 4: Simplify right side
    86,255.68x = 9,070,792,262.07
  5. Step 5: Solve for x
    x = 9,070,792,262.07/86,255.68
  6. Step 6: Final answer
    x = 105,161.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.