Home / 159,811.45-220,532.85-87,212.50

Finding the Fourth Proportional to 159,811.45, 220,532.85 and 87,212.50

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Solution

The fourth proportional to 159,811.45, 220,532.85 and 87,212.50 is: 120,349.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,811.45 : 220,532.85 = 87,212.50 : x
  2. Step 2: Convert to fraction form
    159,811.45/220,532.85 = 87,212.50/x
  3. Step 3: Cross multiply
    159,811.45x = 220,532.85 × 87,212.50
  4. Step 4: Simplify right side
    159,811.45x = 19,233,220,629.29
  5. Step 5: Solve for x
    x = 19,233,220,629.29/159,811.45
  6. Step 6: Final answer
    x = 120,349.46

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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.