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Finding the Fourth Proportional to 130,390.79, 179,933.06 and 80,080.07

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Solution

The fourth proportional to 130,390.79, 179,933.06 and 80,080.07 is: 110,506.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,390.79 : 179,933.06 = 80,080.07 : x
  2. Step 2: Convert to fraction form
    130,390.79/179,933.06 = 80,080.07/x
  3. Step 3: Cross multiply
    130,390.79x = 179,933.06 × 80,080.07
  4. Step 4: Simplify right side
    130,390.79x = 14,409,051,340.65
  5. Step 5: Solve for x
    x = 14,409,051,340.65/130,390.79
  6. Step 6: Final answer
    x = 110,506.67

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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.