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Finding the Fourth Proportional to 121,736.60, 182,604.90 and 112,405.40

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Solution

The fourth proportional to 121,736.60, 182,604.90 and 112,405.40 is: 168,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,736.60 : 182,604.90 = 112,405.40 : x
  2. Step 2: Convert to fraction form
    121,736.60/182,604.90 = 112,405.40/x
  3. Step 3: Cross multiply
    121,736.60x = 182,604.90 × 112,405.40
  4. Step 4: Simplify right side
    121,736.60x = 20,525,776,826.46
  5. Step 5: Solve for x
    x = 20,525,776,826.46/121,736.60
  6. Step 6: Final answer
    x = 168,608.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.