Home / 151,559.64-209,171.16-87,049.08

Finding the Fourth Proportional to 151,559.64, 209,171.16 and 87,049.08

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Solution

The fourth proportional to 151,559.64, 209,171.16 and 87,049.08 is: 120,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,559.64 : 209,171.16 = 87,049.08 : x
  2. Step 2: Convert to fraction form
    151,559.64/209,171.16 = 87,049.08/x
  3. Step 3: Cross multiply
    151,559.64x = 209,171.16 × 87,049.08
  4. Step 4: Simplify right side
    151,559.64x = 18,208,157,040.53
  5. Step 5: Solve for x
    x = 18,208,157,040.53/151,559.64
  6. Step 6: Final answer
    x = 120,138.56

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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.