Home / 161,857.32-242,889.66-78,705.96

Finding the Fourth Proportional to 161,857.32, 242,889.66 and 78,705.96

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Solution

The fourth proportional to 161,857.32, 242,889.66 and 78,705.96 is: 118,109.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,857.32 : 242,889.66 = 78,705.96 : x
  2. Step 2: Convert to fraction form
    161,857.32/242,889.66 = 78,705.96/x
  3. Step 3: Cross multiply
    161,857.32x = 242,889.66 × 78,705.96
  4. Step 4: Simplify right side
    161,857.32x = 19,116,863,864.37
  5. Step 5: Solve for x
    x = 19,116,863,864.37/161,857.32
  6. Step 6: Final answer
    x = 118,109.36

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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.