Home / 121,887.36-168,203.31-68,172.25

Finding the Fourth Proportional to 121,887.36, 168,203.31 and 68,172.25

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Solution

The fourth proportional to 121,887.36, 168,203.31 and 68,172.25 is: 94,077.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,887.36 : 168,203.31 = 68,172.25 : x
  2. Step 2: Convert to fraction form
    121,887.36/168,203.31 = 68,172.25/x
  3. Step 3: Cross multiply
    121,887.36x = 168,203.31 × 68,172.25
  4. Step 4: Simplify right side
    121,887.36x = 11,466,797,221.50
  5. Step 5: Solve for x
    x = 11,466,797,221.50/121,887.36
  6. Step 6: Final answer
    x = 94,077.00

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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.