Home / 131,741.64-181,908.26-121,666.39

Finding the Fourth Proportional to 131,741.64, 181,908.26 and 121,666.39

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Solution

The fourth proportional to 131,741.64, 181,908.26 and 121,666.39 is: 167,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,741.64 : 181,908.26 = 121,666.39 : x
  2. Step 2: Convert to fraction form
    131,741.64/181,908.26 = 121,666.39/x
  3. Step 3: Cross multiply
    131,741.64x = 181,908.26 × 121,666.39
  4. Step 4: Simplify right side
    131,741.64x = 22,132,121,305.38
  5. Step 5: Solve for x
    x = 22,132,121,305.38/131,741.64
  6. Step 6: Final answer
    x = 167,996.40

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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.