Home / 135,638.12-187,177.42-75,208.20

Finding the Fourth Proportional to 135,638.12, 187,177.42 and 75,208.20

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Solution

The fourth proportional to 135,638.12, 187,177.42 and 75,208.20 is: 103,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,638.12 : 187,177.42 = 75,208.20 : x
  2. Step 2: Convert to fraction form
    135,638.12/187,177.42 = 75,208.20/x
  3. Step 3: Cross multiply
    135,638.12x = 187,177.42 × 75,208.20
  4. Step 4: Simplify right side
    135,638.12x = 14,077,276,838.84
  5. Step 5: Solve for x
    x = 14,077,276,838.84/135,638.12
  6. Step 6: Final answer
    x = 103,785.55

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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.