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Finding the Fourth Proportional to 82,001.60, 122,710.80 and 75,003.20

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Solution

The fourth proportional to 82,001.60, 122,710.80 and 75,003.20 is: 112,238.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,001.60 : 122,710.80 = 75,003.20 : x
  2. Step 2: Convert to fraction form
    82,001.60/122,710.80 = 75,003.20/x
  3. Step 3: Cross multiply
    82,001.60x = 122,710.80 × 75,003.20
  4. Step 4: Simplify right side
    82,001.60x = 9,203,702,674.56
  5. Step 5: Solve for x
    x = 9,203,702,674.56/82,001.60
  6. Step 6: Final answer
    x = 112,238.09

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1.5x scale

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.