Home / 161,856.32-242,888.16-78,704.96

Finding the Fourth Proportional to 161,856.32, 242,888.16 and 78,704.96

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Solution

The fourth proportional to 161,856.32, 242,888.16 and 78,704.96 is: 118,107.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,856.32 : 242,888.16 = 78,704.96 : x
  2. Step 2: Convert to fraction form
    161,856.32/242,888.16 = 78,704.96/x
  3. Step 3: Cross multiply
    161,856.32x = 242,888.16 × 78,704.96
  4. Step 4: Simplify right side
    161,856.32x = 19,116,502,917.27
  5. Step 5: Solve for x
    x = 19,116,502,917.27/161,856.32
  6. Step 6: Final answer
    x = 118,107.86

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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.