Home / 131,528.13-181,466.01-80,487.60

Finding the Fourth Proportional to 131,528.13, 181,466.01 and 80,487.60

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Solution

The fourth proportional to 131,528.13, 181,466.01 and 80,487.60 is: 111,046.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,528.13 : 181,466.01 = 80,487.60 : x
  2. Step 2: Convert to fraction form
    131,528.13/181,466.01 = 80,487.60/x
  3. Step 3: Cross multiply
    131,528.13x = 181,466.01 × 80,487.60
  4. Step 4: Simplify right side
    131,528.13x = 14,605,763,626.48
  5. Step 5: Solve for x
    x = 14,605,763,626.48/131,528.13
  6. Step 6: Final answer
    x = 111,046.69

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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.