Home / 151,891.22-209,609.21-83,908.23

Finding the Fourth Proportional to 151,891.22, 209,609.21 and 83,908.23

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Solution

The fourth proportional to 151,891.22, 209,609.21 and 83,908.23 is: 115,792.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,891.22 : 209,609.21 = 83,908.23 : x
  2. Step 2: Convert to fraction form
    151,891.22/209,609.21 = 83,908.23/x
  3. Step 3: Cross multiply
    151,891.22x = 209,609.21 × 83,908.23
  4. Step 4: Simplify right side
    151,891.22x = 17,587,937,558.20
  5. Step 5: Solve for x
    x = 17,587,937,558.20/151,891.22
  6. Step 6: Final answer
    x = 115,792.98

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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.