Home / 131,776.20-181,881.05-103,039.02

Finding the Fourth Proportional to 131,776.20, 181,881.05 and 103,039.02

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Solution

The fourth proportional to 131,776.20, 181,881.05 and 103,039.02 is: 142,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,776.20 : 181,881.05 = 103,039.02 : x
  2. Step 2: Convert to fraction form
    131,776.20/181,881.05 = 103,039.02/x
  3. Step 3: Cross multiply
    131,776.20x = 181,881.05 × 103,039.02
  4. Step 4: Simplify right side
    131,776.20x = 18,740,844,633.38
  5. Step 5: Solve for x
    x = 18,740,844,633.38/131,776.20
  6. Step 6: Final answer
    x = 142,217.22

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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.