Home / 121,997.79-168,356.91-68,282.81

Finding the Fourth Proportional to 121,997.79, 168,356.91 and 68,282.81

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Solution

The fourth proportional to 121,997.79, 168,356.91 and 68,282.81 is: 94,230.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,997.79 : 168,356.91 = 68,282.81 : x
  2. Step 2: Convert to fraction form
    121,997.79/168,356.91 = 68,282.81/x
  3. Step 3: Cross multiply
    121,997.79x = 168,356.91 × 68,282.81
  4. Step 4: Simplify right side
    121,997.79x = 11,495,882,055.93
  5. Step 5: Solve for x
    x = 11,495,882,055.93/121,997.79
  6. Step 6: Final answer
    x = 94,230.25

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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.