Home / 135,823.90-187,428.12-75,391.66

Finding the Fourth Proportional to 135,823.90, 187,428.12 and 75,391.66

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Solution

The fourth proportional to 135,823.90, 187,428.12 and 75,391.66 is: 104,035.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,823.90 : 187,428.12 = 75,391.66 : x
  2. Step 2: Convert to fraction form
    135,823.90/187,428.12 = 75,391.66/x
  3. Step 3: Cross multiply
    135,823.90x = 187,428.12 × 75,391.66
  4. Step 4: Simplify right side
    135,823.90x = 14,130,517,097.48
  5. Step 5: Solve for x
    x = 14,130,517,097.48/135,823.90
  6. Step 6: Final answer
    x = 104,035.57

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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.