Home / 151,091.56-208,496.08-87,438.93

Finding the Fourth Proportional to 151,091.56, 208,496.08 and 87,438.93

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Solution

The fourth proportional to 151,091.56, 208,496.08 and 87,438.93 is: 120,659.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,091.56 : 208,496.08 = 87,438.93 : x
  2. Step 2: Convert to fraction form
    151,091.56/208,496.08 = 87,438.93/x
  3. Step 3: Cross multiply
    151,091.56x = 208,496.08 × 87,438.93
  4. Step 4: Simplify right side
    151,091.56x = 18,230,672,979.99
  5. Step 5: Solve for x
    x = 18,230,672,979.99/151,091.56
  6. Step 6: Final answer
    x = 120,659.77

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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.