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Finding the Fourth Proportional to 130,198.76, 179,672.66 and 76,488.67

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Solution

The fourth proportional to 130,198.76, 179,672.66 and 76,488.67 is: 105,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,198.76 : 179,672.66 = 76,488.67 : x
  2. Step 2: Convert to fraction form
    130,198.76/179,672.66 = 76,488.67/x
  3. Step 3: Cross multiply
    130,198.76x = 179,672.66 × 76,488.67
  4. Step 4: Simplify right side
    130,198.76x = 13,742,921,900.40
  5. Step 5: Solve for x
    x = 13,742,921,900.40/130,198.76
  6. Step 6: Final answer
    x = 105,553.40

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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.