Home / 126,390.12-189,439.36-47,454

Finding the Fourth Proportional to 126,390.12, 189,439.36 and 47,454

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Solution

The fourth proportional to 126,390.12, 189,439.36 and 47,454 is: 71,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,390.12 : 189,439.36 = 47,454 : x
  2. Step 2: Convert to fraction form
    126,390.12/189,439.36 = 47,454/x
  3. Step 3: Cross multiply
    126,390.12x = 189,439.36 × 47,454
  4. Step 4: Simplify right side
    126,390.12x = 8,989,655,389.44
  5. Step 5: Solve for x
    x = 8,989,655,389.44/126,390.12
  6. Step 6: Final answer
    x = 71,126.25

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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.