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Finding the Fourth Proportional to 139,967.70, 210,013.58 and 73,392.01

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Solution

The fourth proportional to 139,967.70, 210,013.58 and 73,392.01 is: 110,120.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,967.70 : 210,013.58 = 73,392.01 : x
  2. Step 2: Convert to fraction form
    139,967.70/210,013.58 = 73,392.01/x
  3. Step 3: Cross multiply
    139,967.70x = 210,013.58 × 73,392.01
  4. Step 4: Simplify right side
    139,967.70x = 15,413,318,763.50
  5. Step 5: Solve for x
    x = 15,413,318,763.50/139,967.70
  6. Step 6: Final answer
    x = 110,120.54

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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.