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Finding the Fourth Proportional to 130,406.40, 179,942.40 and 73,814.40

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Solution

The fourth proportional to 130,406.40, 179,942.40 and 73,814.40 is: 101,853.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,406.40 : 179,942.40 = 73,814.40 : x
  2. Step 2: Convert to fraction form
    130,406.40/179,942.40 = 73,814.40/x
  3. Step 3: Cross multiply
    130,406.40x = 179,942.40 × 73,814.40
  4. Step 4: Simplify right side
    130,406.40x = 13,282,340,290.56
  5. Step 5: Solve for x
    x = 13,282,340,290.56/130,406.40
  6. Step 6: Final answer
    x = 101,853.44

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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.