Home / 126,061,931.45-189,037,979.16-66,961,378.73

Finding the Fourth Proportional to 126,061,931.45, 189,037,979.16 and 66,961,378.73

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Solution

The fourth proportional to 126,061,931.45, 189,037,979.16 and 66,961,378.73 is: 100,412,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,061,931.45 : 189,037,979.16 = 66,961,378.73 : x
  2. Step 2: Convert to fraction form
    126,061,931.45/189,037,979.16 = 66,961,378.73/x
  3. Step 3: Cross multiply
    126,061,931.45x = 189,037,979.16 × 66,961,378.73
  4. Step 4: Simplify right side
    126,061,931.45x = 12,658,243,715,941,418
  5. Step 5: Solve for x
    x = 12,658,243,715,941,418/126,061,931.45
  6. Step 6: Final answer
    x = 100,412,896.83

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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.