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Finding the Fourth Proportional to 100,898.58, 139,238.01 and 63,193.62

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Solution

The fourth proportional to 100,898.58, 139,238.01 and 63,193.62 is: 87,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,898.58 : 139,238.01 = 63,193.62 : x
  2. Step 2: Convert to fraction form
    100,898.58/139,238.01 = 63,193.62/x
  3. Step 3: Cross multiply
    100,898.58x = 139,238.01 × 63,193.62
  4. Step 4: Simplify right side
    100,898.58x = 8,798,953,893.50
  5. Step 5: Solve for x
    x = 8,798,953,893.50/100,898.58
  6. Step 6: Final answer
    x = 87,205.92

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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.