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Finding the Fourth Proportional to 121,029.42, 167,038.11 and 72,633.54

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Solution

The fourth proportional to 121,029.42, 167,038.11 and 72,633.54 is: 100,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029.42 : 167,038.11 = 72,633.54 : x
  2. Step 2: Convert to fraction form
    121,029.42/167,038.11 = 72,633.54/x
  3. Step 3: Cross multiply
    121,029.42x = 167,038.11 × 72,633.54
  4. Step 4: Simplify right side
    121,029.42x = 12,132,569,244.21
  5. Step 5: Solve for x
    x = 12,132,569,244.21/121,029.42
  6. Step 6: Final answer
    x = 100,244.79

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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.