Home / 115,285.83-159,168.48-72,324.21

Finding the Fourth Proportional to 115,285.83, 159,168.48 and 72,324.21

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Solution

The fourth proportional to 115,285.83, 159,168.48 and 72,324.21 is: 99,853.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,285.83 : 159,168.48 = 72,324.21 : x
  2. Step 2: Convert to fraction form
    115,285.83/159,168.48 = 72,324.21/x
  3. Step 3: Cross multiply
    115,285.83x = 159,168.48 × 72,324.21
  4. Step 4: Simplify right side
    115,285.83x = 11,511,734,572.90
  5. Step 5: Solve for x
    x = 11,511,734,572.90/115,285.83
  6. Step 6: Final answer
    x = 99,853.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.