Home / 135,821.90-187,425.36-75,389.66

Finding the Fourth Proportional to 135,821.90, 187,425.36 and 75,389.66

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Solution

The fourth proportional to 135,821.90, 187,425.36 and 75,389.66 is: 104,032.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,821.90 : 187,425.36 = 75,389.66 : x
  2. Step 2: Convert to fraction form
    135,821.90/187,425.36 = 75,389.66/x
  3. Step 3: Cross multiply
    135,821.90x = 187,425.36 × 75,389.66
  4. Step 4: Simplify right side
    135,821.90x = 14,129,934,165.78
  5. Step 5: Solve for x
    x = 14,129,934,165.78/135,821.90
  6. Step 6: Final answer
    x = 104,032.81

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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.