Home / 100,848.20-151,272.30-85,101.80

Finding the Fourth Proportional to 100,848.20, 151,272.30 and 85,101.80

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Solution

The fourth proportional to 100,848.20, 151,272.30 and 85,101.80 is: 127,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,848.20 : 151,272.30 = 85,101.80 : x
  2. Step 2: Convert to fraction form
    100,848.20/151,272.30 = 85,101.80/x
  3. Step 3: Cross multiply
    100,848.20x = 151,272.30 × 85,101.80
  4. Step 4: Simplify right side
    100,848.20x = 12,873,545,020.14
  5. Step 5: Solve for x
    x = 12,873,545,020.14/100,848.20
  6. Step 6: Final answer
    x = 127,652.70

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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.