Home / 172,631.28-258,749.28-72,641.64

Finding the Fourth Proportional to 172,631.28, 258,749.28 and 72,641.64

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Solution

The fourth proportional to 172,631.28, 258,749.28 and 72,641.64 is: 108,879.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,631.28 : 258,749.28 = 72,641.64 : x
  2. Step 2: Convert to fraction form
    172,631.28/258,749.28 = 72,641.64/x
  3. Step 3: Cross multiply
    172,631.28x = 258,749.28 × 72,641.64
  4. Step 4: Simplify right side
    172,631.28x = 18,795,972,048.02
  5. Step 5: Solve for x
    x = 18,795,972,048.02/172,631.28
  6. Step 6: Final answer
    x = 108,879.29

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1.5x scale

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.