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Finding the Fourth Proportional to 160,004.35, 220,832.49 and 121,889.80

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Solution

The fourth proportional to 160,004.35, 220,832.49 and 121,889.80 is: 168,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,004.35 : 220,832.49 = 121,889.80 : x
  2. Step 2: Convert to fraction form
    160,004.35/220,832.49 = 121,889.80/x
  3. Step 3: Cross multiply
    160,004.35x = 220,832.49 × 121,889.80
  4. Step 4: Simplify right side
    160,004.35x = 26,917,228,039.60
  5. Step 5: Solve for x
    x = 26,917,228,039.60/160,004.35
  6. Step 6: Final answer
    x = 168,228.10

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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.