Home / 121,133,035.31-167,162,738.33-66,128,891.81

Finding the Fourth Proportional to 121,133,035.31, 167,162,738.33 and 66,128,891.81

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Solution

The fourth proportional to 121,133,035.31, 167,162,738.33 and 66,128,891.81 is: 91,257,406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133,035.31 : 167,162,738.33 = 66,128,891.81 : x
  2. Step 2: Convert to fraction form
    121,133,035.31/167,162,738.33 = 66,128,891.81/x
  3. Step 3: Cross multiply
    121,133,035.31x = 167,162,738.33 × 66,128,891.81
  4. Step 4: Simplify right side
    121,133,035.31x = 11,054,286,636,521,452
  5. Step 5: Solve for x
    x = 11,054,286,636,521,452/121,133,035.31
  6. Step 6: Final answer
    x = 91,257,406.44

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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.