Home / 161,986.40-242,979.48-87,003.32

Finding the Fourth Proportional to 161,986.40, 242,979.48 and 87,003.32

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Solution

The fourth proportional to 161,986.40, 242,979.48 and 87,003.32 is: 130,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,986.40 : 242,979.48 = 87,003.32 : x
  2. Step 2: Convert to fraction form
    161,986.40/242,979.48 = 87,003.32/x
  3. Step 3: Cross multiply
    161,986.40x = 242,979.48 × 87,003.32
  4. Step 4: Simplify right side
    161,986.40x = 21,140,021,451.87
  5. Step 5: Solve for x
    x = 21,140,021,451.87/161,986.40
  6. Step 6: Final answer
    x = 130,504.92

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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.