Home / 136,157.06-187,903.68-75,728.88

Finding the Fourth Proportional to 136,157.06, 187,903.68 and 75,728.88

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Solution

The fourth proportional to 136,157.06, 187,903.68 and 75,728.88 is: 104,509.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,157.06 : 187,903.68 = 75,728.88 : x
  2. Step 2: Convert to fraction form
    136,157.06/187,903.68 = 75,728.88/x
  3. Step 3: Cross multiply
    136,157.06x = 187,903.68 × 75,728.88
  4. Step 4: Simplify right side
    136,157.06x = 14,229,735,234.28
  5. Step 5: Solve for x
    x = 14,229,735,234.28/136,157.06
  6. Step 6: Final answer
    x = 104,509.71

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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.