Home / 121,180.02-167,256-78,664.74

Finding the Fourth Proportional to 121,180.02, 167,256 and 78,664.74

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Solution

The fourth proportional to 121,180.02, 167,256 and 78,664.74 is: 108,575.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,180.02 : 167,256 = 78,664.74 : x
  2. Step 2: Convert to fraction form
    121,180.02/167,256 = 78,664.74/x
  3. Step 3: Cross multiply
    121,180.02x = 167,256 × 78,664.74
  4. Step 4: Simplify right side
    121,180.02x = 13,157,149,753.44
  5. Step 5: Solve for x
    x = 13,157,149,753.44/121,180.02
  6. Step 6: Final answer
    x = 108,575.24

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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.