Home / 135,149.72-186,490.50-74,712.20

Finding the Fourth Proportional to 135,149.72, 186,490.50 and 74,712.20

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Solution

The fourth proportional to 135,149.72, 186,490.50 and 74,712.20 is: 103,093.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,149.72 : 186,490.50 = 74,712.20 : x
  2. Step 2: Convert to fraction form
    135,149.72/186,490.50 = 74,712.20/x
  3. Step 3: Cross multiply
    135,149.72x = 186,490.50 × 74,712.20
  4. Step 4: Simplify right side
    135,149.72x = 13,933,115,534.10
  5. Step 5: Solve for x
    x = 13,933,115,534.10/135,149.72
  6. Step 6: Final answer
    x = 103,093.93

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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.