Home / 90,836.20-136,278.60-64,592.20

Finding the Fourth Proportional to 90,836.20, 136,278.60 and 64,592.20

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Solution

The fourth proportional to 90,836.20, 136,278.60 and 64,592.20 is: 96,905.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,836.20 : 136,278.60 = 64,592.20 : x
  2. Step 2: Convert to fraction form
    90,836.20/136,278.60 = 64,592.20/x
  3. Step 3: Cross multiply
    90,836.20x = 136,278.60 × 64,592.20
  4. Step 4: Simplify right side
    90,836.20x = 8,802,534,586.92
  5. Step 5: Solve for x
    x = 8,802,534,586.92/90,836.20
  6. Step 6: Final answer
    x = 96,905.58

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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.