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Finding the Fourth Proportional to 135,374.64, 203,185.08 and 72,248.28

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Solution

The fourth proportional to 135,374.64, 203,185.08 and 72,248.28 is: 108,438.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,374.64 : 203,185.08 = 72,248.28 : x
  2. Step 2: Convert to fraction form
    135,374.64/203,185.08 = 72,248.28/x
  3. Step 3: Cross multiply
    135,374.64x = 203,185.08 × 72,248.28
  4. Step 4: Simplify right side
    135,374.64x = 14,679,772,551.66
  5. Step 5: Solve for x
    x = 14,679,772,551.66/135,374.64
  6. Step 6: Final answer
    x = 108,438.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.