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Finding the Fourth Proportional to 101,349.45, 139,899.83 and 61,065.45

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Solution

The fourth proportional to 101,349.45, 139,899.83 and 61,065.45 is: 84,292.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,349.45 : 139,899.83 = 61,065.45 : x
  2. Step 2: Convert to fraction form
    101,349.45/139,899.83 = 61,065.45/x
  3. Step 3: Cross multiply
    101,349.45x = 139,899.83 × 61,065.45
  4. Step 4: Simplify right side
    101,349.45x = 8,543,045,768.55
  5. Step 5: Solve for x
    x = 8,543,045,768.55/101,349.45
  6. Step 6: Final answer
    x = 84,292.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.