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Finding the Fourth Proportional to 101,354.14, 139,880.88 and 58,912.68

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Solution

The fourth proportional to 101,354.14, 139,880.88 and 58,912.68 is: 81,306.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,354.14 : 139,880.88 = 58,912.68 : x
  2. Step 2: Convert to fraction form
    101,354.14/139,880.88 = 58,912.68/x
  3. Step 3: Cross multiply
    101,354.14x = 139,880.88 × 58,912.68
  4. Step 4: Simplify right side
    101,354.14x = 8,240,757,521.56
  5. Step 5: Solve for x
    x = 8,240,757,521.56/101,354.14
  6. Step 6: Final answer
    x = 81,306.57

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1.5x scale

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.