Home / 131,736.13-181,900.67-121,660.90

Finding the Fourth Proportional to 131,736.13, 181,900.67 and 121,660.90

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Solution

The fourth proportional to 131,736.13, 181,900.67 and 121,660.90 is: 167,988.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,736.13 : 181,900.67 = 121,660.90 : x
  2. Step 2: Convert to fraction form
    131,736.13/181,900.67 = 121,660.90/x
  3. Step 3: Cross multiply
    131,736.13x = 181,900.67 × 121,660.90
  4. Step 4: Simplify right side
    131,736.13x = 22,130,199,222.80
  5. Step 5: Solve for x
    x = 22,130,199,222.80/131,736.13
  6. Step 6: Final answer
    x = 167,988.84

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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.