Home / 131,021.42-180,810.16-74,435.90

Finding the Fourth Proportional to 131,021.42, 180,810.16 and 74,435.90

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Solution

The fourth proportional to 131,021.42, 180,810.16 and 74,435.90 is: 102,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.42 : 180,810.16 = 74,435.90 : x
  2. Step 2: Convert to fraction form
    131,021.42/180,810.16 = 74,435.90/x
  3. Step 3: Cross multiply
    131,021.42x = 180,810.16 × 74,435.90
  4. Step 4: Simplify right side
    131,021.42x = 13,458,765,898.60
  5. Step 5: Solve for x
    x = 13,458,765,898.60/131,021.42
  6. Step 6: Final answer
    x = 102,721.88

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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.