Home / 121,385.24-167,451.46-81,111.63

Finding the Fourth Proportional to 121,385.24, 167,451.46 and 81,111.63

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Solution

The fourth proportional to 121,385.24, 167,451.46 and 81,111.63 is: 111,893.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,385.24 : 167,451.46 = 81,111.63 : x
  2. Step 2: Convert to fraction form
    121,385.24/167,451.46 = 81,111.63/x
  3. Step 3: Cross multiply
    121,385.24x = 167,451.46 × 81,111.63
  4. Step 4: Simplify right side
    121,385.24x = 13,582,260,663.70
  5. Step 5: Solve for x
    x = 13,582,260,663.70/121,385.24
  6. Step 6: Final answer
    x = 111,893.84

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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.