Home / 120,891.32-166,778.28-75,490.48

Finding the Fourth Proportional to 120,891.32, 166,778.28 and 75,490.48

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Solution

The fourth proportional to 120,891.32, 166,778.28 and 75,490.48 is: 104,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,891.32 : 166,778.28 = 75,490.48 : x
  2. Step 2: Convert to fraction form
    120,891.32/166,778.28 = 75,490.48/x
  3. Step 3: Cross multiply
    120,891.32x = 166,778.28 × 75,490.48
  4. Step 4: Simplify right side
    120,891.32x = 12,590,171,681.12
  5. Step 5: Solve for x
    x = 12,590,171,681.12/120,891.32
  6. Step 6: Final answer
    x = 104,144.55

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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.