Home / 122,119.10-168,582.07-81,859.16

Finding the Fourth Proportional to 122,119.10, 168,582.07 and 81,859.16

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Solution

The fourth proportional to 122,119.10, 168,582.07 and 81,859.16 is: 113,004.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,119.10 : 168,582.07 = 81,859.16 : x
  2. Step 2: Convert to fraction form
    122,119.10/168,582.07 = 81,859.16/x
  3. Step 3: Cross multiply
    122,119.10x = 168,582.07 × 81,859.16
  4. Step 4: Simplify right side
    122,119.10x = 13,799,986,641.26
  5. Step 5: Solve for x
    x = 13,799,986,641.26/122,119.10
  6. Step 6: Final answer
    x = 113,004.33

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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.