Home / 121,212.81-181,758.34-70,628.17

Finding the Fourth Proportional to 121,212.81, 181,758.34 and 70,628.17

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Solution

The fourth proportional to 121,212.81, 181,758.34 and 70,628.17 is: 105,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,212.81 : 181,758.34 = 70,628.17 : x
  2. Step 2: Convert to fraction form
    121,212.81/181,758.34 = 70,628.17/x
  3. Step 3: Cross multiply
    121,212.81x = 181,758.34 × 70,628.17
  4. Step 4: Simplify right side
    121,212.81x = 12,837,258,936.44
  5. Step 5: Solve for x
    x = 12,837,258,936.44/121,212.81
  6. Step 6: Final answer
    x = 105,906.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.