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Finding the Fourth Proportional to 103,675.70, 155,513.55 and 41,390.90

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Solution

The fourth proportional to 103,675.70, 155,513.55 and 41,390.90 is: 62,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,675.70 : 155,513.55 = 41,390.90 : x
  2. Step 2: Convert to fraction form
    103,675.70/155,513.55 = 41,390.90/x
  3. Step 3: Cross multiply
    103,675.70x = 155,513.55 × 41,390.90
  4. Step 4: Simplify right side
    103,675.70x = 6,436,845,796.70
  5. Step 5: Solve for x
    x = 6,436,845,796.70/103,675.70
  6. Step 6: Final answer
    x = 62,086.35

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1.5x scale

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.