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Finding the Fourth Proportional to 135,773.78, 187,376.58 and 75,344.55

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Solution

The fourth proportional to 135,773.78, 187,376.58 and 75,344.55 is: 103,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,773.78 : 187,376.58 = 75,344.55 : x
  2. Step 2: Convert to fraction form
    135,773.78/187,376.58 = 75,344.55/x
  3. Step 3: Cross multiply
    135,773.78x = 187,376.58 × 75,344.55
  4. Step 4: Simplify right side
    135,773.78x = 14,117,804,100.64
  5. Step 5: Solve for x
    x = 14,117,804,100.64/135,773.78
  6. Step 6: Final answer
    x = 103,980.35

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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.