Home / 151,540.37-209,110.90-87,871.13

Finding the Fourth Proportional to 151,540.37, 209,110.90 and 87,871.13

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Solution

The fourth proportional to 151,540.37, 209,110.90 and 87,871.13 is: 121,253.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,540.37 : 209,110.90 = 87,871.13 : x
  2. Step 2: Convert to fraction form
    151,540.37/209,110.90 = 87,871.13/x
  3. Step 3: Cross multiply
    151,540.37x = 209,110.90 × 87,871.13
  4. Step 4: Simplify right side
    151,540.37x = 18,374,811,078.32
  5. Step 5: Solve for x
    x = 18,374,811,078.32/151,540.37
  6. Step 6: Final answer
    x = 121,253.57

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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.