Home / 115,999.04-160,003.68-79,683.20

Finding the Fourth Proportional to 115,999.04, 160,003.68 and 79,683.20

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Solution

The fourth proportional to 115,999.04, 160,003.68 and 79,683.20 is: 109,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,999.04 : 160,003.68 = 79,683.20 : x
  2. Step 2: Convert to fraction form
    115,999.04/160,003.68 = 79,683.20/x
  3. Step 3: Cross multiply
    115,999.04x = 160,003.68 × 79,683.20
  4. Step 4: Simplify right side
    115,999.04x = 12,749,605,234.18
  5. Step 5: Solve for x
    x = 12,749,605,234.18/115,999.04
  6. Step 6: Final answer
    x = 109,911.30

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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.