Home / 135,156.84-186,500.16-74,719.32

Finding the Fourth Proportional to 135,156.84, 186,500.16 and 74,719.32

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Solution

The fourth proportional to 135,156.84, 186,500.16 and 74,719.32 is: 103,103.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,156.84 : 186,500.16 = 74,719.32 : x
  2. Step 2: Convert to fraction form
    135,156.84/186,500.16 = 74,719.32/x
  3. Step 3: Cross multiply
    135,156.84x = 186,500.16 × 74,719.32
  4. Step 4: Simplify right side
    135,156.84x = 13,935,165,135.09
  5. Step 5: Solve for x
    x = 13,935,165,135.09/135,156.84
  6. Step 6: Final answer
    x = 103,103.66

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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.