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Finding the Fourth Proportional to 188,712.74, 283,116.63 and 70,387.94

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Solution

The fourth proportional to 188,712.74, 283,116.63 and 70,387.94 is: 105,599.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,712.74 : 283,116.63 = 70,387.94 : x
  2. Step 2: Convert to fraction form
    188,712.74/283,116.63 = 70,387.94/x
  3. Step 3: Cross multiply
    188,712.74x = 283,116.63 × 70,387.94
  4. Step 4: Simplify right side
    188,712.74x = 19,927,996,365.44
  5. Step 5: Solve for x
    x = 19,927,996,365.44/188,712.74
  6. Step 6: Final answer
    x = 105,599.63

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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.