Home / 121,889.07-168,215.70-68,191.37

Finding the Fourth Proportional to 121,889.07, 168,215.70 and 68,191.37

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Solution

The fourth proportional to 121,889.07, 168,215.70 and 68,191.37 is: 94,109.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,889.07 : 168,215.70 = 68,191.37 : x
  2. Step 2: Convert to fraction form
    121,889.07/168,215.70 = 68,191.37/x
  3. Step 3: Cross multiply
    121,889.07x = 168,215.70 × 68,191.37
  4. Step 4: Simplify right side
    121,889.07x = 11,470,859,083.96
  5. Step 5: Solve for x
    x = 11,470,859,083.96/121,889.07
  6. Step 6: Final answer
    x = 94,109.00

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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.