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Finding the Fourth Proportional to 103,089.84, 154,488.90 and 43,865.88

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Solution

The fourth proportional to 103,089.84, 154,488.90 and 43,865.88 is: 65,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,089.84 : 154,488.90 = 43,865.88 : x
  2. Step 2: Convert to fraction form
    103,089.84/154,488.90 = 43,865.88/x
  3. Step 3: Cross multiply
    103,089.84x = 154,488.90 × 43,865.88
  4. Step 4: Simplify right side
    103,089.84x = 6,776,791,548.73
  5. Step 5: Solve for x
    x = 6,776,791,548.73/103,089.84
  6. Step 6: Final answer
    x = 65,736.75

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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.