Home / 135,051.30-186,495.21-90,468.90

Finding the Fourth Proportional to 135,051.30, 186,495.21 and 90,468.90

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Solution

The fourth proportional to 135,051.30, 186,495.21 and 90,468.90 is: 124,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,051.30 : 186,495.21 = 90,468.90 : x
  2. Step 2: Convert to fraction form
    135,051.30/186,495.21 = 90,468.90/x
  3. Step 3: Cross multiply
    135,051.30x = 186,495.21 × 90,468.90
  4. Step 4: Simplify right side
    135,051.30x = 16,872,016,503.97
  5. Step 5: Solve for x
    x = 16,872,016,503.97/135,051.30
  6. Step 6: Final answer
    x = 124,930.43

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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.