Home / 209,100.12-288,572.39-118,456.80

Finding the Fourth Proportional to 209,100.12, 288,572.39 and 118,456.80

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Solution

The fourth proportional to 209,100.12, 288,572.39 and 118,456.80 is: 163,478.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,100.12 : 288,572.39 = 118,456.80 : x
  2. Step 2: Convert to fraction form
    209,100.12/288,572.39 = 118,456.80/x
  3. Step 3: Cross multiply
    209,100.12x = 288,572.39 × 118,456.80
  4. Step 4: Simplify right side
    209,100.12x = 34,183,360,657.53
  5. Step 5: Solve for x
    x = 34,183,360,657.53/209,100.12
  6. Step 6: Final answer
    x = 163,478.44

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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.