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Finding the Fourth Proportional to 185,459.43, 255,907.08 and 103,787.30

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Solution

The fourth proportional to 185,459.43, 255,907.08 and 103,787.30 is: 143,211.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,459.43 : 255,907.08 = 103,787.30 : x
  2. Step 2: Convert to fraction form
    185,459.43/255,907.08 = 103,787.30/x
  3. Step 3: Cross multiply
    185,459.43x = 255,907.08 × 103,787.30
  4. Step 4: Simplify right side
    185,459.43x = 26,559,903,604.55
  5. Step 5: Solve for x
    x = 26,559,903,604.55/185,459.43
  6. Step 6: Final answer
    x = 143,211.39

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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.