Home / 112,187.65-168,141.36-72,099.94

Finding the Fourth Proportional to 112,187.65, 168,141.36 and 72,099.94

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Solution

The fourth proportional to 112,187.65, 168,141.36 and 72,099.94 is: 108,059.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,187.65 : 168,141.36 = 72,099.94 : x
  2. Step 2: Convert to fraction form
    112,187.65/168,141.36 = 72,099.94/x
  3. Step 3: Cross multiply
    112,187.65x = 168,141.36 × 72,099.94
  4. Step 4: Simplify right side
    112,187.65x = 12,122,982,639.37
  5. Step 5: Solve for x
    x = 12,122,982,639.37/112,187.65
  6. Step 6: Final answer
    x = 108,059.86

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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.