Home / 135,540.05-187,045.70-75,111.68

Finding the Fourth Proportional to 135,540.05, 187,045.70 and 75,111.68

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Solution

The fourth proportional to 135,540.05, 187,045.70 and 75,111.68 is: 103,654.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,540.05 : 187,045.70 = 75,111.68 : x
  2. Step 2: Convert to fraction form
    135,540.05/187,045.70 = 75,111.68/x
  3. Step 3: Cross multiply
    135,540.05x = 187,045.70 × 75,111.68
  4. Step 4: Simplify right side
    135,540.05x = 14,049,316,855.83
  5. Step 5: Solve for x
    x = 14,049,316,855.83/135,540.05
  6. Step 6: Final answer
    x = 103,654.36

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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.