Home / 120,487.07-166,290.09-69,490.28

Finding the Fourth Proportional to 120,487.07, 166,290.09 and 69,490.28

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Solution

The fourth proportional to 120,487.07, 166,290.09 and 69,490.28 is: 95,906.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,487.07 : 166,290.09 = 69,490.28 : x
  2. Step 2: Convert to fraction form
    120,487.07/166,290.09 = 69,490.28/x
  3. Step 3: Cross multiply
    120,487.07x = 166,290.09 × 69,490.28
  4. Step 4: Simplify right side
    120,487.07x = 11,555,544,915.33
  5. Step 5: Solve for x
    x = 11,555,544,915.33/120,487.07
  6. Step 6: Final answer
    x = 95,906.93

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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.