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Finding the Fourth Proportional to 121,064.40, 167,023.08 and 75,102.84

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Solution

The fourth proportional to 121,064.40, 167,023.08 and 75,102.84 is: 103,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,064.40 : 167,023.08 = 75,102.84 : x
  2. Step 2: Convert to fraction form
    121,064.40/167,023.08 = 75,102.84/x
  3. Step 3: Cross multiply
    121,064.40x = 167,023.08 × 75,102.84
  4. Step 4: Simplify right side
    121,064.40x = 12,543,907,653.55
  5. Step 5: Solve for x
    x = 12,543,907,653.55/121,064.40
  6. Step 6: Final answer
    x = 103,613.51

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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.