Home / 86,905.60-130,358.40-67,222.60

Finding the Fourth Proportional to 86,905.60, 130,358.40 and 67,222.60

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Solution

The fourth proportional to 86,905.60, 130,358.40 and 67,222.60 is: 100,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,905.60 : 130,358.40 = 67,222.60 : x
  2. Step 2: Convert to fraction form
    86,905.60/130,358.40 = 67,222.60/x
  3. Step 3: Cross multiply
    86,905.60x = 130,358.40 × 67,222.60
  4. Step 4: Simplify right side
    86,905.60x = 8,763,030,579.84
  5. Step 5: Solve for x
    x = 8,763,030,579.84/86,905.60
  6. Step 6: Final answer
    x = 100,833.90

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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.