Home / 151,415.28-208,953.24-87,765.36

Finding the Fourth Proportional to 151,415.28, 208,953.24 and 87,765.36

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Solution

The fourth proportional to 151,415.28, 208,953.24 and 87,765.36 is: 121,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,415.28 : 208,953.24 = 87,765.36 : x
  2. Step 2: Convert to fraction form
    151,415.28/208,953.24 = 87,765.36/x
  3. Step 3: Cross multiply
    151,415.28x = 208,953.24 × 87,765.36
  4. Step 4: Simplify right side
    151,415.28x = 18,338,856,331.77
  5. Step 5: Solve for x
    x = 18,338,856,331.77/151,415.28
  6. Step 6: Final answer
    x = 121,116.29

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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.