Home / 131,723.28-181,782.53-80,726.16

Finding the Fourth Proportional to 131,723.28, 181,782.53 and 80,726.16

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Solution

The fourth proportional to 131,723.28, 181,782.53 and 80,726.16 is: 111,404.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,723.28 : 181,782.53 = 80,726.16 : x
  2. Step 2: Convert to fraction form
    131,723.28/181,782.53 = 80,726.16/x
  3. Step 3: Cross multiply
    131,723.28x = 181,782.53 × 80,726.16
  4. Step 4: Simplify right side
    131,723.28x = 14,674,604,904.60
  5. Step 5: Solve for x
    x = 14,674,604,904.60/131,723.28
  6. Step 6: Final answer
    x = 111,404.79

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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.