Home / 105,885.71-146,121.27-58,138.64

Finding the Fourth Proportional to 105,885.71, 146,121.27 and 58,138.64

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Solution

The fourth proportional to 105,885.71, 146,121.27 and 58,138.64 is: 80,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,885.71 : 146,121.27 = 58,138.64 : x
  2. Step 2: Convert to fraction form
    105,885.71/146,121.27 = 58,138.64/x
  3. Step 3: Cross multiply
    105,885.71x = 146,121.27 × 58,138.64
  4. Step 4: Simplify right side
    105,885.71x = 8,495,291,912.87
  5. Step 5: Solve for x
    x = 8,495,291,912.87/105,885.71
  6. Step 6: Final answer
    x = 80,230.77

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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.