Home / 121,571.02-167,845.06-83,394.52

Finding the Fourth Proportional to 121,571.02, 167,845.06 and 83,394.52

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Solution

The fourth proportional to 121,571.02, 167,845.06 and 83,394.52 is: 115,137.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,571.02 : 167,845.06 = 83,394.52 : x
  2. Step 2: Convert to fraction form
    121,571.02/167,845.06 = 83,394.52/x
  3. Step 3: Cross multiply
    121,571.02x = 167,845.06 × 83,394.52
  4. Step 4: Simplify right side
    121,571.02x = 13,997,358,213.07
  5. Step 5: Solve for x
    x = 13,997,358,213.07/121,571.02
  6. Step 6: Final answer
    x = 115,137.29

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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.