Home / 126,271.31-174,217.84-77,856.80

Finding the Fourth Proportional to 126,271.31, 174,217.84 and 77,856.80

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Solution

The fourth proportional to 126,271.31, 174,217.84 and 77,856.80 is: 107,419.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,271.31 : 174,217.84 = 77,856.80 : x
  2. Step 2: Convert to fraction form
    126,271.31/174,217.84 = 77,856.80/x
  3. Step 3: Cross multiply
    126,271.31x = 174,217.84 × 77,856.80
  4. Step 4: Simplify right side
    126,271.31x = 13,564,042,459.58
  5. Step 5: Solve for x
    x = 13,564,042,459.58/126,271.31
  6. Step 6: Final answer
    x = 107,419.83

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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.