Home / 121,861.40-168,167.58-68,145.80

Finding the Fourth Proportional to 121,861.40, 168,167.58 and 68,145.80

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Solution

The fourth proportional to 121,861.40, 168,167.58 and 68,145.80 is: 94,040.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,861.40 : 168,167.58 = 68,145.80 : x
  2. Step 2: Convert to fraction form
    121,861.40/168,167.58 = 68,145.80/x
  3. Step 3: Cross multiply
    121,861.40x = 168,167.58 × 68,145.80
  4. Step 4: Simplify right side
    121,861.40x = 11,459,914,273.16
  5. Step 5: Solve for x
    x = 11,459,914,273.16/121,861.40
  6. Step 6: Final answer
    x = 94,040.56

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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.