Home / 131,520.66-181,509.57-80,533.14

Finding the Fourth Proportional to 131,520.66, 181,509.57 and 80,533.14

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Solution

The fourth proportional to 131,520.66, 181,509.57 and 80,533.14 is: 111,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,520.66 : 181,509.57 = 80,533.14 : x
  2. Step 2: Convert to fraction form
    131,520.66/181,509.57 = 80,533.14/x
  3. Step 3: Cross multiply
    131,520.66x = 181,509.57 × 80,533.14
  4. Step 4: Simplify right side
    131,520.66x = 14,617,535,612.15
  5. Step 5: Solve for x
    x = 14,617,535,612.15/131,520.66
  6. Step 6: Final answer
    x = 111,142.51

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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.