Home / 121,928.40-168,260.04-68,212.88

Finding the Fourth Proportional to 121,928.40, 168,260.04 and 68,212.88

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Solution

The fourth proportional to 121,928.40, 168,260.04 and 68,212.88 is: 94,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,928.40 : 168,260.04 = 68,212.88 : x
  2. Step 2: Convert to fraction form
    121,928.40/168,260.04 = 68,212.88/x
  3. Step 3: Cross multiply
    121,928.40x = 168,260.04 × 68,212.88
  4. Step 4: Simplify right side
    121,928.40x = 11,477,501,917.32
  5. Step 5: Solve for x
    x = 11,477,501,917.32/121,928.40
  6. Step 6: Final answer
    x = 94,133.13

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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.