Home / 121,509,174.75-167,682,661.16-66,505,031.25

Finding the Fourth Proportional to 121,509,174.75, 167,682,661.16 and 66,505,031.25

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Solution

The fourth proportional to 121,509,174.75, 167,682,661.16 and 66,505,031.25 is: 91,776,943.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,509,174.75 : 167,682,661.16 = 66,505,031.25 : x
  2. Step 2: Convert to fraction form
    121,509,174.75/167,682,661.16 = 66,505,031.25/x
  3. Step 3: Cross multiply
    121,509,174.75x = 167,682,661.16 × 66,505,031.25
  4. Step 4: Simplify right side
    121,509,174.75x = 11,151,740,620,196,436
  5. Step 5: Solve for x
    x = 11,151,740,620,196,436/121,509,174.75
  6. Step 6: Final answer
    x = 91,776,943.13

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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.