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Finding the Fourth Proportional to 101,485.90, 142,391.30 and 101,485.90

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Solution

The fourth proportional to 101,485.90, 142,391.30 and 101,485.90 is: 142,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,485.90 : 142,391.30 = 101,485.90 : x
  2. Step 2: Convert to fraction form
    101,485.90/142,391.30 = 101,485.90/x
  3. Step 3: Cross multiply
    101,485.90x = 142,391.30 × 101,485.90
  4. Step 4: Simplify right side
    101,485.90x = 14,450,709,232.67
  5. Step 5: Solve for x
    x = 14,450,709,232.67/101,485.90
  6. Step 6: Final answer
    x = 142,391.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.