Home / 126,061,931.20-189,037,978.78-66,961,378.48

Finding the Fourth Proportional to 126,061,931.20, 189,037,978.78 and 66,961,378.48

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Solution

The fourth proportional to 126,061,931.20, 189,037,978.78 and 66,961,378.48 is: 100,412,896.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,061,931.20 : 189,037,978.78 = 66,961,378.48 : x
  2. Step 2: Convert to fraction form
    126,061,931.20/189,037,978.78 = 66,961,378.48/x
  3. Step 3: Cross multiply
    126,061,931.20x = 189,037,978.78 × 66,961,378.48
  4. Step 4: Simplify right side
    126,061,931.20x = 12,658,243,644,181,788
  5. Step 5: Solve for x
    x = 12,658,243,644,181,788/126,061,931.20
  6. Step 6: Final answer
    x = 100,412,896.45

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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.