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Finding the Fourth Proportional to 149,615.61, 206,228.35 and 101,199.88

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Solution

The fourth proportional to 149,615.61, 206,228.35 and 101,199.88 is: 139,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,615.61 : 206,228.35 = 101,199.88 : x
  2. Step 2: Convert to fraction form
    149,615.61/206,228.35 = 101,199.88/x
  3. Step 3: Cross multiply
    149,615.61x = 206,228.35 × 101,199.88
  4. Step 4: Simplify right side
    149,615.61x = 20,870,283,766.60
  5. Step 5: Solve for x
    x = 20,870,283,766.60/149,615.61
  6. Step 6: Final answer
    x = 139,492.69

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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.