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Finding the Fourth Proportional to 139,835.96, 209,783.22 and 45,073.24

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Solution

The fourth proportional to 139,835.96, 209,783.22 and 45,073.24 is: 67,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,835.96 : 209,783.22 = 45,073.24 : x
  2. Step 2: Convert to fraction form
    139,835.96/209,783.22 = 45,073.24/x
  3. Step 3: Cross multiply
    139,835.96x = 209,783.22 × 45,073.24
  4. Step 4: Simplify right side
    139,835.96x = 9,455,609,423.03
  5. Step 5: Solve for x
    x = 9,455,609,423.03/139,835.96
  6. Step 6: Final answer
    x = 67,619.30

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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.