Home / 220,162.47-330,139.56-85,289.70

Finding the Fourth Proportional to 220,162.47, 330,139.56 and 85,289.70

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Solution

The fourth proportional to 220,162.47, 330,139.56 and 85,289.70 is: 127,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,162.47 : 330,139.56 = 85,289.70 : x
  2. Step 2: Convert to fraction form
    220,162.47/330,139.56 = 85,289.70/x
  3. Step 3: Cross multiply
    220,162.47x = 330,139.56 × 85,289.70
  4. Step 4: Simplify right side
    220,162.47x = 28,157,504,030.53
  5. Step 5: Solve for x
    x = 28,157,504,030.53/220,162.47
  6. Step 6: Final answer
    x = 127,894.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.