Home / 130,006.30-194,620.65-77,388.70

Finding the Fourth Proportional to 130,006.30, 194,620.65 and 77,388.70

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Solution

The fourth proportional to 130,006.30, 194,620.65 and 77,388.70 is: 115,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,006.30 : 194,620.65 = 77,388.70 : x
  2. Step 2: Convert to fraction form
    130,006.30/194,620.65 = 77,388.70/x
  3. Step 3: Cross multiply
    130,006.30x = 194,620.65 × 77,388.70
  4. Step 4: Simplify right side
    130,006.30x = 15,061,439,096.66
  5. Step 5: Solve for x
    x = 15,061,439,096.66/130,006.30
  6. Step 6: Final answer
    x = 115,851.61

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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.