Home / 136,618.97-188,533.80-76,189.67

Finding the Fourth Proportional to 136,618.97, 188,533.80 and 76,189.67

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Solution

The fourth proportional to 136,618.97, 188,533.80 and 76,189.67 is: 105,141.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,618.97 : 188,533.80 = 76,189.67 : x
  2. Step 2: Convert to fraction form
    136,618.97/188,533.80 = 76,189.67/x
  3. Step 3: Cross multiply
    136,618.97x = 188,533.80 × 76,189.67
  4. Step 4: Simplify right side
    136,618.97x = 14,364,328,477.18
  5. Step 5: Solve for x
    x = 14,364,328,477.18/136,618.97
  6. Step 6: Final answer
    x = 105,141.54

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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.