Home / 209,139.26-288,623.24-118,512.80

Finding the Fourth Proportional to 209,139.26, 288,623.24 and 118,512.80

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Solution

The fourth proportional to 209,139.26, 288,623.24 and 118,512.80 is: 163,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,139.26 : 288,623.24 = 118,512.80 : x
  2. Step 2: Convert to fraction form
    209,139.26/288,623.24 = 118,512.80/x
  3. Step 3: Cross multiply
    209,139.26x = 288,623.24 × 118,512.80
  4. Step 4: Simplify right side
    209,139.26x = 34,205,548,317.47
  5. Step 5: Solve for x
    x = 34,205,548,317.47/209,139.26
  6. Step 6: Final answer
    x = 163,553.93

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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.