Home / 126,146.50-189,219.75-51,307.36

Finding the Fourth Proportional to 126,146.50, 189,219.75 and 51,307.36

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Solution

The fourth proportional to 126,146.50, 189,219.75 and 51,307.36 is: 76,961.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,146.50 : 189,219.75 = 51,307.36 : x
  2. Step 2: Convert to fraction form
    126,146.50/189,219.75 = 51,307.36/x
  3. Step 3: Cross multiply
    126,146.50x = 189,219.75 × 51,307.36
  4. Step 4: Simplify right side
    126,146.50x = 9,708,365,832.36
  5. Step 5: Solve for x
    x = 9,708,365,832.36/126,146.50
  6. Step 6: Final answer
    x = 76,961.04

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.