Home / 121,999.57-168,362.96-68,283.20

Finding the Fourth Proportional to 121,999.57, 168,362.96 and 68,283.20

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Solution

The fourth proportional to 121,999.57, 168,362.96 and 68,283.20 is: 94,232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,999.57 : 168,362.96 = 68,283.20 : x
  2. Step 2: Convert to fraction form
    121,999.57/168,362.96 = 68,283.20/x
  3. Step 3: Cross multiply
    121,999.57x = 168,362.96 × 68,283.20
  4. Step 4: Simplify right side
    121,999.57x = 11,496,362,261.89
  5. Step 5: Solve for x
    x = 11,496,362,261.89/121,999.57
  6. Step 6: Final answer
    x = 94,232.81

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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.