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Finding the Fourth Proportional to 130,181.60, 194,818.80 and 77,628.80

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Solution

The fourth proportional to 130,181.60, 194,818.80 and 77,628.80 is: 116,172.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,181.60 : 194,818.80 = 77,628.80 : x
  2. Step 2: Convert to fraction form
    130,181.60/194,818.80 = 77,628.80/x
  3. Step 3: Cross multiply
    130,181.60x = 194,818.80 × 77,628.80
  4. Step 4: Simplify right side
    130,181.60x = 15,123,549,661.44
  5. Step 5: Solve for x
    x = 15,123,549,661.44/130,181.60
  6. Step 6: Final answer
    x = 116,172.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.