Home / 135,589.89-187,050.77-85,316.61

Finding the Fourth Proportional to 135,589.89, 187,050.77 and 85,316.61

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Solution

The fourth proportional to 135,589.89, 187,050.77 and 85,316.61 is: 117,697.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,589.89 : 187,050.77 = 85,316.61 : x
  2. Step 2: Convert to fraction form
    135,589.89/187,050.77 = 85,316.61/x
  3. Step 3: Cross multiply
    135,589.89x = 187,050.77 × 85,316.61
  4. Step 4: Simplify right side
    135,589.89x = 15,958,537,167.71
  5. Step 5: Solve for x
    x = 15,958,537,167.71/135,589.89
  6. Step 6: Final answer
    x = 117,697.10

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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.