Home / 161,982.96-243,043.56-78,854.64

Finding the Fourth Proportional to 161,982.96, 243,043.56 and 78,854.64

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Solution

The fourth proportional to 161,982.96, 243,043.56 and 78,854.64 is: 118,315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,982.96 : 243,043.56 = 78,854.64 : x
  2. Step 2: Convert to fraction form
    161,982.96/243,043.56 = 78,854.64/x
  3. Step 3: Cross multiply
    161,982.96x = 243,043.56 × 78,854.64
  4. Step 4: Simplify right side
    161,982.96x = 19,165,112,428.12
  5. Step 5: Solve for x
    x = 19,165,112,428.12/161,982.96
  6. Step 6: Final answer
    x = 118,315.61

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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.