Home / 121,812.28-168,102.15-68,100.24

Finding the Fourth Proportional to 121,812.28, 168,102.15 and 68,100.24

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Solution

The fourth proportional to 121,812.28, 168,102.15 and 68,100.24 is: 93,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,812.28 : 168,102.15 = 68,100.24 : x
  2. Step 2: Convert to fraction form
    121,812.28/168,102.15 = 68,100.24/x
  3. Step 3: Cross multiply
    121,812.28x = 168,102.15 × 68,100.24
  4. Step 4: Simplify right side
    121,812.28x = 11,447,796,759.52
  5. Step 5: Solve for x
    x = 11,447,796,759.52/121,812.28
  6. Step 6: Final answer
    x = 93,979.00

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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.