Home / 159,628.78-220,289.20-88,011.36

Finding the Fourth Proportional to 159,628.78, 220,289.20 and 88,011.36

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Solution

The fourth proportional to 159,628.78, 220,289.20 and 88,011.36 is: 121,456.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,628.78 : 220,289.20 = 88,011.36 : x
  2. Step 2: Convert to fraction form
    159,628.78/220,289.20 = 88,011.36/x
  3. Step 3: Cross multiply
    159,628.78x = 220,289.20 × 88,011.36
  4. Step 4: Simplify right side
    159,628.78x = 19,387,952,360.35
  5. Step 5: Solve for x
    x = 19,387,952,360.35/159,628.78
  6. Step 6: Final answer
    x = 121,456.50

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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.