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Finding the Fourth Proportional to 188,698.69, 283,038.79 and 70,360.78

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Solution

The fourth proportional to 188,698.69, 283,038.79 and 70,360.78 is: 105,537.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,698.69 : 283,038.79 = 70,360.78 : x
  2. Step 2: Convert to fraction form
    188,698.69/283,038.79 = 70,360.78/x
  3. Step 3: Cross multiply
    188,698.69x = 283,038.79 × 70,360.78
  4. Step 4: Simplify right side
    188,698.69x = 19,914,828,267.66
  5. Step 5: Solve for x
    x = 19,914,828,267.66/188,698.69
  6. Step 6: Final answer
    x = 105,537.71

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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.