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Finding the Fourth Proportional to 125,989.59, 173,865.64 and 69,400.97

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Solution

The fourth proportional to 125,989.59, 173,865.64 and 69,400.97 is: 95,773.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,989.59 : 173,865.64 = 69,400.97 : x
  2. Step 2: Convert to fraction form
    125,989.59/173,865.64 = 69,400.97/x
  3. Step 3: Cross multiply
    125,989.59x = 173,865.64 × 69,400.97
  4. Step 4: Simplify right side
    125,989.59x = 12,066,443,804.96
  5. Step 5: Solve for x
    x = 12,066,443,804.96/125,989.59
  6. Step 6: Final answer
    x = 95,773.34

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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.