Home / 108,118.45-162,178.35-70,914.84

Finding the Fourth Proportional to 108,118.45, 162,178.35 and 70,914.84

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Solution

The fourth proportional to 108,118.45, 162,178.35 and 70,914.84 is: 106,372.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,118.45 : 162,178.35 = 70,914.84 : x
  2. Step 2: Convert to fraction form
    108,118.45/162,178.35 = 70,914.84/x
  3. Step 3: Cross multiply
    108,118.45x = 162,178.35 × 70,914.84
  4. Step 4: Simplify right side
    108,118.45x = 11,500,852,178.76
  5. Step 5: Solve for x
    x = 11,500,852,178.76/108,118.45
  6. Step 6: Final answer
    x = 106,372.71

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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.