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Finding the Fourth Proportional to 121,486.76, 167,670.20 and 73,730.87

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Solution

The fourth proportional to 121,486.76, 167,670.20 and 73,730.87 is: 101,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,486.76 : 167,670.20 = 73,730.87 : x
  2. Step 2: Convert to fraction form
    121,486.76/167,670.20 = 73,730.87/x
  3. Step 3: Cross multiply
    121,486.76x = 167,670.20 × 73,730.87
  4. Step 4: Simplify right side
    121,486.76x = 12,362,469,719.07
  5. Step 5: Solve for x
    x = 12,362,469,719.07/121,486.76
  6. Step 6: Final answer
    x = 101,759.81

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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.