Home / 136,908.45-188,932.19-76,485.15

Finding the Fourth Proportional to 136,908.45, 188,932.19 and 76,485.15

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Solution

The fourth proportional to 136,908.45, 188,932.19 and 76,485.15 is: 105,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,908.45 : 188,932.19 = 76,485.15 : x
  2. Step 2: Convert to fraction form
    136,908.45/188,932.19 = 76,485.15/x
  3. Step 3: Cross multiply
    136,908.45x = 188,932.19 × 76,485.15
  4. Step 4: Simplify right side
    136,908.45x = 14,450,506,509.55
  5. Step 5: Solve for x
    x = 14,450,506,509.55/136,908.45
  6. Step 6: Final answer
    x = 105,548.68

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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.