Home / 120,633.40-166,479.55-66,918.45

Finding the Fourth Proportional to 120,633.40, 166,479.55 and 66,918.45

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Solution

The fourth proportional to 120,633.40, 166,479.55 and 66,918.45 is: 92,350.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,633.40 : 166,479.55 = 66,918.45 : x
  2. Step 2: Convert to fraction form
    120,633.40/166,479.55 = 66,918.45/x
  3. Step 3: Cross multiply
    120,633.40x = 166,479.55 × 66,918.45
  4. Step 4: Simplify right side
    120,633.40x = 11,140,554,276.12
  5. Step 5: Solve for x
    x = 11,140,554,276.12/120,633.40
  6. Step 6: Final answer
    x = 92,350.49

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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.