Home / 136,621.12-188,538.18-76,195.72

Finding the Fourth Proportional to 136,621.12, 188,538.18 and 76,195.72

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Solution

The fourth proportional to 136,621.12, 188,538.18 and 76,195.72 is: 105,150.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,621.12 : 188,538.18 = 76,195.72 : x
  2. Step 2: Convert to fraction form
    136,621.12/188,538.18 = 76,195.72/x
  3. Step 3: Cross multiply
    136,621.12x = 188,538.18 × 76,195.72
  4. Step 4: Simplify right side
    136,621.12x = 14,365,802,372.59
  5. Step 5: Solve for x
    x = 14,365,802,372.59/136,621.12
  6. Step 6: Final answer
    x = 105,150.67

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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.