Home / 135,237.09-186,564.34-87,505.86

Finding the Fourth Proportional to 135,237.09, 186,564.34 and 87,505.86

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Solution

The fourth proportional to 135,237.09, 186,564.34 and 87,505.86 is: 120,717.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,237.09 : 186,564.34 = 87,505.86 : x
  2. Step 2: Convert to fraction form
    135,237.09/186,564.34 = 87,505.86/x
  3. Step 3: Cross multiply
    135,237.09x = 186,564.34 × 87,505.86
  4. Step 4: Simplify right side
    135,237.09x = 16,325,473,017.03
  5. Step 5: Solve for x
    x = 16,325,473,017.03/135,237.09
  6. Step 6: Final answer
    x = 120,717.42

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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.