Home / 135,153.45-186,504.23-74,720.57

Finding the Fourth Proportional to 135,153.45, 186,504.23 and 74,720.57

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Solution

The fourth proportional to 135,153.45, 186,504.23 and 74,720.57 is: 103,110.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,153.45 : 186,504.23 = 74,720.57 : x
  2. Step 2: Convert to fraction form
    135,153.45/186,504.23 = 74,720.57/x
  3. Step 3: Cross multiply
    135,153.45x = 186,504.23 × 74,720.57
  4. Step 4: Simplify right side
    135,153.45x = 13,935,701,066.89
  5. Step 5: Solve for x
    x = 13,935,701,066.89/135,153.45
  6. Step 6: Final answer
    x = 103,110.21

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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.