Home / 103,678.72-155,512.62-51,070.44

Finding the Fourth Proportional to 103,678.72, 155,512.62 and 51,070.44

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Solution

The fourth proportional to 103,678.72, 155,512.62 and 51,070.44 is: 76,602.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,678.72 : 155,512.62 = 51,070.44 : x
  2. Step 2: Convert to fraction form
    103,678.72/155,512.62 = 51,070.44/x
  3. Step 3: Cross multiply
    103,678.72x = 155,512.62 × 51,070.44
  4. Step 4: Simplify right side
    103,678.72x = 7,942,097,928.95
  5. Step 5: Solve for x
    x = 7,942,097,928.95/103,678.72
  6. Step 6: Final answer
    x = 76,602.97

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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.