Home / 121,812.28-168,103.29-68,101.18

Finding the Fourth Proportional to 121,812.28, 168,103.29 and 68,101.18

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Solution

The fourth proportional to 121,812.28, 168,103.29 and 68,101.18 is: 93,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,812.28 : 168,103.29 = 68,101.18 : x
  2. Step 2: Convert to fraction form
    121,812.28/168,103.29 = 68,101.18/x
  3. Step 3: Cross multiply
    121,812.28x = 168,103.29 × 68,101.18
  4. Step 4: Simplify right side
    121,812.28x = 11,448,032,410.88
  5. Step 5: Solve for x
    x = 11,448,032,410.88/121,812.28
  6. Step 6: Final answer
    x = 93,980.94

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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.