Home / 131,986.96-182,128.36-81,001.84

Finding the Fourth Proportional to 131,986.96, 182,128.36 and 81,001.84

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Solution

The fourth proportional to 131,986.96, 182,128.36 and 81,001.84 is: 111,774.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,986.96 : 182,128.36 = 81,001.84 : x
  2. Step 2: Convert to fraction form
    131,986.96/182,128.36 = 81,001.84/x
  3. Step 3: Cross multiply
    131,986.96x = 182,128.36 × 81,001.84
  4. Step 4: Simplify right side
    131,986.96x = 14,752,732,276.18
  5. Step 5: Solve for x
    x = 14,752,732,276.18/131,986.96
  6. Step 6: Final answer
    x = 111,774.17

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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.