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Finding the Fourth Proportional to 100,889.58, 139,225.59 and 63,184.62

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Solution

The fourth proportional to 100,889.58, 139,225.59 and 63,184.62 is: 87,193.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,889.58 : 139,225.59 = 63,184.62 : x
  2. Step 2: Convert to fraction form
    100,889.58/139,225.59 = 63,184.62/x
  3. Step 3: Cross multiply
    100,889.58x = 139,225.59 × 63,184.62
  4. Step 4: Simplify right side
    100,889.58x = 8,796,915,998.43
  5. Step 5: Solve for x
    x = 8,796,915,998.43/100,889.58
  6. Step 6: Final answer
    x = 87,193.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.