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Finding the Fourth Proportional to 103,365.70, 155,048.55 and 101,983.30

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Solution

The fourth proportional to 103,365.70, 155,048.55 and 101,983.30 is: 152,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,365.70 : 155,048.55 = 101,983.30 : x
  2. Step 2: Convert to fraction form
    103,365.70/155,048.55 = 101,983.30/x
  3. Step 3: Cross multiply
    103,365.70x = 155,048.55 × 101,983.30
  4. Step 4: Simplify right side
    103,365.70x = 15,812,362,789.22
  5. Step 5: Solve for x
    x = 15,812,362,789.22/103,365.70
  6. Step 6: Final answer
    x = 152,974.95

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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.