Home / 135,166.10-186,521.20-74,732.00

Finding the Fourth Proportional to 135,166.10, 186,521.20 and 74,732.00

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Solution

The fourth proportional to 135,166.10, 186,521.20 and 74,732.00 is: 103,125.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,166.10 : 186,521.20 = 74,732.00 : x
  2. Step 2: Convert to fraction form
    135,166.10/186,521.20 = 74,732.00/x
  3. Step 3: Cross multiply
    135,166.10x = 186,521.20 × 74,732.00
  4. Step 4: Simplify right side
    135,166.10x = 13,939,101,198.96
  5. Step 5: Solve for x
    x = 13,939,101,198.96/135,166.10
  6. Step 6: Final answer
    x = 103,125.72

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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.