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Finding the Fourth Proportional to 101,999.40, 152,999.10 and 54,760.20

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Solution

The fourth proportional to 101,999.40, 152,999.10 and 54,760.20 is: 82,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,999.40 : 152,999.10 = 54,760.20 : x
  2. Step 2: Convert to fraction form
    101,999.40/152,999.10 = 54,760.20/x
  3. Step 3: Cross multiply
    101,999.40x = 152,999.10 × 54,760.20
  4. Step 4: Simplify right side
    101,999.40x = 8,378,261,315.82
  5. Step 5: Solve for x
    x = 8,378,261,315.82/101,999.40
  6. Step 6: Final answer
    x = 82,140.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.