Home / 112,511.58-155,105.73-76,655.73

Finding the Fourth Proportional to 112,511.58, 155,105.73 and 76,655.73

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Solution

The fourth proportional to 112,511.58, 155,105.73 and 76,655.73 is: 105,675.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,511.58 : 155,105.73 = 76,655.73 : x
  2. Step 2: Convert to fraction form
    112,511.58/155,105.73 = 76,655.73/x
  3. Step 3: Cross multiply
    112,511.58x = 155,105.73 × 76,655.73
  4. Step 4: Simplify right side
    112,511.58x = 11,889,742,960.33
  5. Step 5: Solve for x
    x = 11,889,742,960.33/112,511.58
  6. Step 6: Final answer
    x = 105,675.73

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1.5x scale

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.