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Finding the Fourth Proportional to 121,149, 167,166.48 and 70,166.54

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Solution

The fourth proportional to 121,149, 167,166.48 and 70,166.54 is: 96,818.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,149 : 167,166.48 = 70,166.54 : x
  2. Step 2: Convert to fraction form
    121,149/167,166.48 = 70,166.54/x
  3. Step 3: Cross multiply
    121,149x = 167,166.48 × 70,166.54
  4. Step 4: Simplify right side
    121,149x = 11,729,492,669.75
  5. Step 5: Solve for x
    x = 11,729,492,669.75/121,149
  6. Step 6: Final answer
    x = 96,818.73

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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.