Home / 131,735.13-181,899.29-121,659.90

Finding the Fourth Proportional to 131,735.13, 181,899.29 and 121,659.90

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Solution

The fourth proportional to 131,735.13, 181,899.29 and 121,659.90 is: 167,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,735.13 : 181,899.29 = 121,659.90 : x
  2. Step 2: Convert to fraction form
    131,735.13/181,899.29 = 121,659.90/x
  3. Step 3: Cross multiply
    131,735.13x = 181,899.29 × 121,659.90
  4. Step 4: Simplify right side
    131,735.13x = 22,129,848,521.97
  5. Step 5: Solve for x
    x = 22,129,848,521.97/131,735.13
  6. Step 6: Final answer
    x = 167,987.45

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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.