Home / 209,129.76-288,598.48-113,636.80

Finding the Fourth Proportional to 209,129.76, 288,598.48 and 113,636.80

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Solution

The fourth proportional to 209,129.76, 288,598.48 and 113,636.80 is: 156,818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,129.76 : 288,598.48 = 113,636.80 : x
  2. Step 2: Convert to fraction form
    209,129.76/288,598.48 = 113,636.80/x
  3. Step 3: Cross multiply
    209,129.76x = 288,598.48 × 113,636.80
  4. Step 4: Simplify right side
    209,129.76x = 32,795,407,752.06
  5. Step 5: Solve for x
    x = 32,795,407,752.06/209,129.76
  6. Step 6: Final answer
    x = 156,818.46

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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.