Home / 121,861.90-168,168.27-68,146.30

Finding the Fourth Proportional to 121,861.90, 168,168.27 and 68,146.30

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Solution

The fourth proportional to 121,861.90, 168,168.27 and 68,146.30 is: 94,041.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,861.90 : 168,168.27 = 68,146.30 : x
  2. Step 2: Convert to fraction form
    121,861.90/168,168.27 = 68,146.30/x
  3. Step 3: Cross multiply
    121,861.90x = 168,168.27 × 68,146.30
  4. Step 4: Simplify right side
    121,861.90x = 11,460,045,377.90
  5. Step 5: Solve for x
    x = 11,460,045,377.90/121,861.90
  6. Step 6: Final answer
    x = 94,041.25

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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.