Home / 161,621.87-242,349.77-86,804.96

Finding the Fourth Proportional to 161,621.87, 242,349.77 and 86,804.96

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Solution

The fourth proportional to 161,621.87, 242,349.77 and 86,804.96 is: 130,162.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,621.87 : 242,349.77 = 86,804.96 : x
  2. Step 2: Convert to fraction form
    161,621.87/242,349.77 = 86,804.96/x
  3. Step 3: Cross multiply
    161,621.87x = 242,349.77 × 86,804.96
  4. Step 4: Simplify right side
    161,621.87x = 21,037,161,096.12
  5. Step 5: Solve for x
    x = 21,037,161,096.12/161,621.87
  6. Step 6: Final answer
    x = 130,162.84

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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.