Home / 151,238.94-208,721.79-87,577.86

Finding the Fourth Proportional to 151,238.94, 208,721.79 and 87,577.86

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Solution

The fourth proportional to 151,238.94, 208,721.79 and 87,577.86 is: 120,864.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,238.94 : 208,721.79 = 87,577.86 : x
  2. Step 2: Convert to fraction form
    151,238.94/208,721.79 = 87,577.86/x
  3. Step 3: Cross multiply
    151,238.94x = 208,721.79 × 87,577.86
  4. Step 4: Simplify right side
    151,238.94x = 18,279,407,703.57
  5. Step 5: Solve for x
    x = 18,279,407,703.57/151,238.94
  6. Step 6: Final answer
    x = 120,864.43

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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.