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Finding the Fourth Proportional to 135,954.90, 203,973.08 and 47,208.87

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Solution

The fourth proportional to 135,954.90, 203,973.08 and 47,208.87 is: 70,827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,954.90 : 203,973.08 = 47,208.87 : x
  2. Step 2: Convert to fraction form
    135,954.90/203,973.08 = 47,208.87/x
  3. Step 3: Cross multiply
    135,954.90x = 203,973.08 × 47,208.87
  4. Step 4: Simplify right side
    135,954.90x = 9,629,338,381.18
  5. Step 5: Solve for x
    x = 9,629,338,381.18/135,954.90
  6. Step 6: Final answer
    x = 70,827.45

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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.