Home / 99,409.68-137,236.19-76,697.64

Finding the Fourth Proportional to 99,409.68, 137,236.19 and 76,697.64

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Solution

The fourth proportional to 99,409.68, 137,236.19 and 76,697.64 is: 105,881.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,409.68 : 137,236.19 = 76,697.64 : x
  2. Step 2: Convert to fraction form
    99,409.68/137,236.19 = 76,697.64/x
  3. Step 3: Cross multiply
    99,409.68x = 137,236.19 × 76,697.64
  4. Step 4: Simplify right side
    99,409.68x = 10,525,691,512.10
  5. Step 5: Solve for x
    x = 10,525,691,512.10/99,409.68
  6. Step 6: Final answer
    x = 105,881.96

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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.