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Finding the Fourth Proportional to 120,476.98, 166,259.20 and 66,762.88

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Solution

The fourth proportional to 120,476.98, 166,259.20 and 66,762.88 is: 92,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,476.98 : 166,259.20 = 66,762.88 : x
  2. Step 2: Convert to fraction form
    120,476.98/166,259.20 = 66,762.88/x
  3. Step 3: Cross multiply
    120,476.98x = 166,259.20 × 66,762.88
  4. Step 4: Simplify right side
    120,476.98x = 11,099,943,018.50
  5. Step 5: Solve for x
    x = 11,099,943,018.50/120,476.98
  6. Step 6: Final answer
    x = 92,133.31

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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.