Home / 131,821.24-181,931.40-80,824.94

Finding the Fourth Proportional to 131,821.24, 181,931.40 and 80,824.94

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Solution

The fourth proportional to 131,821.24, 181,931.40 and 80,824.94 is: 111,549.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,821.24 : 181,931.40 = 80,824.94 : x
  2. Step 2: Convert to fraction form
    131,821.24/181,931.40 = 80,824.94/x
  3. Step 3: Cross multiply
    131,821.24x = 181,931.40 × 80,824.94
  4. Step 4: Simplify right side
    131,821.24x = 14,704,594,489.12
  5. Step 5: Solve for x
    x = 14,704,594,489.12/131,821.24
  6. Step 6: Final answer
    x = 111,549.51

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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.