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Finding the Fourth Proportional to 110,266.30, 165,071.40 and 72,868.60

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Solution

The fourth proportional to 110,266.30, 165,071.40 and 72,868.60 is: 109,086.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,266.30 : 165,071.40 = 72,868.60 : x
  2. Step 2: Convert to fraction form
    110,266.30/165,071.40 = 72,868.60/x
  3. Step 3: Cross multiply
    110,266.30x = 165,071.40 × 72,868.60
  4. Step 4: Simplify right side
    110,266.30x = 12,028,521,818.04
  5. Step 5: Solve for x
    x = 12,028,521,818.04/110,266.30
  6. Step 6: Final answer
    x = 109,086.11

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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.