Home / 120,605.19-166,326.25-75,287.36

Finding the Fourth Proportional to 120,605.19, 166,326.25 and 75,287.36

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Solution

The fourth proportional to 120,605.19, 166,326.25 and 75,287.36 is: 103,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,605.19 : 166,326.25 = 75,287.36 : x
  2. Step 2: Convert to fraction form
    120,605.19/166,326.25 = 75,287.36/x
  3. Step 3: Cross multiply
    120,605.19x = 166,326.25 × 75,287.36
  4. Step 4: Simplify right side
    120,605.19x = 12,522,264,290.19
  5. Step 5: Solve for x
    x = 12,522,264,290.19/120,605.19
  6. Step 6: Final answer
    x = 103,828.57

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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.