Home / 135,638.04-187,178.56-75,208.80

Finding the Fourth Proportional to 135,638.04, 187,178.56 and 75,208.80

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Solution

The fourth proportional to 135,638.04, 187,178.56 and 75,208.80 is: 103,787.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,638.04 : 187,178.56 = 75,208.80 : x
  2. Step 2: Convert to fraction form
    135,638.04/187,178.56 = 75,208.80/x
  3. Step 3: Cross multiply
    135,638.04x = 187,178.56 × 75,208.80
  4. Step 4: Simplify right side
    135,638.04x = 14,077,474,883.33
  5. Step 5: Solve for x
    x = 14,077,474,883.33/135,638.04
  6. Step 6: Final answer
    x = 103,787.07

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1.5x scale

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.