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Finding the Fourth Proportional to 106,920, 147,588.48 and 62,208

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Solution

The fourth proportional to 106,920, 147,588.48 and 62,208 is: 85,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,920 : 147,588.48 = 62,208 : x
  2. Step 2: Convert to fraction form
    106,920/147,588.48 = 62,208/x
  3. Step 3: Cross multiply
    106,920x = 147,588.48 × 62,208
  4. Step 4: Simplify right side
    106,920x = 9,181,184,163.84
  5. Step 5: Solve for x
    x = 9,181,184,163.84/106,920
  6. Step 6: Final answer
    x = 85,869.66

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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.