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Finding the Fourth Proportional to 135,656.52, 187,207.06 and 75,223.64

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Solution

The fourth proportional to 135,656.52, 187,207.06 and 75,223.64 is: 103,809.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,656.52 : 187,207.06 = 75,223.64 : x
  2. Step 2: Convert to fraction form
    135,656.52/187,207.06 = 75,223.64/x
  3. Step 3: Cross multiply
    135,656.52x = 187,207.06 × 75,223.64
  4. Step 4: Simplify right side
    135,656.52x = 14,082,396,486.90
  5. Step 5: Solve for x
    x = 14,082,396,486.90/135,656.52
  6. Step 6: Final answer
    x = 103,809.21

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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.