Home / 209,142.26-288,627.38-118,515.80

Finding the Fourth Proportional to 209,142.26, 288,627.38 and 118,515.80

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Solution

The fourth proportional to 209,142.26, 288,627.38 and 118,515.80 is: 163,558.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,142.26 : 288,627.38 = 118,515.80 : x
  2. Step 2: Convert to fraction form
    209,142.26/288,627.38 = 118,515.80/x
  3. Step 3: Cross multiply
    209,142.26x = 288,627.38 × 118,515.80
  4. Step 4: Simplify right side
    209,142.26x = 34,206,904,842.60
  5. Step 5: Solve for x
    x = 34,206,904,842.60/209,142.26
  6. Step 6: Final answer
    x = 163,558.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.