Home / 121,860.40-168,166.20-68,144.80

Finding the Fourth Proportional to 121,860.40, 168,166.20 and 68,144.80

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Solution

The fourth proportional to 121,860.40, 168,166.20 and 68,144.80 is: 94,039.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,860.40 : 168,166.20 = 68,144.80 : x
  2. Step 2: Convert to fraction form
    121,860.40/168,166.20 = 68,144.80/x
  3. Step 3: Cross multiply
    121,860.40x = 168,166.20 × 68,144.80
  4. Step 4: Simplify right side
    121,860.40x = 11,459,652,065.76
  5. Step 5: Solve for x
    x = 11,459,652,065.76/121,860.40
  6. Step 6: Final answer
    x = 94,039.18

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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.