Home / 209,154.76-288,635.40-113,661.45

Finding the Fourth Proportional to 209,154.76, 288,635.40 and 113,661.45

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Solution

The fourth proportional to 209,154.76, 288,635.40 and 113,661.45 is: 156,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,154.76 : 288,635.40 = 113,661.45 : x
  2. Step 2: Convert to fraction form
    209,154.76/288,635.40 = 113,661.45/x
  3. Step 3: Cross multiply
    209,154.76x = 288,635.40 × 113,661.45
  4. Step 4: Simplify right side
    209,154.76x = 32,806,718,085.33
  5. Step 5: Solve for x
    x = 32,806,718,085.33/209,154.76
  6. Step 6: Final answer
    x = 156,853.80

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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.