Home / 131,102.89-180,935.88-80,145.45

Finding the Fourth Proportional to 131,102.89, 180,935.88 and 80,145.45

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Solution

The fourth proportional to 131,102.89, 180,935.88 and 80,145.45 is: 110,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,102.89 : 180,935.88 = 80,145.45 : x
  2. Step 2: Convert to fraction form
    131,102.89/180,935.88 = 80,145.45/x
  3. Step 3: Cross multiply
    131,102.89x = 180,935.88 × 80,145.45
  4. Step 4: Simplify right side
    131,102.89x = 14,501,188,202.26
  5. Step 5: Solve for x
    x = 14,501,188,202.26/131,102.89
  6. Step 6: Final answer
    x = 110,609.22

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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.