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Finding the Fourth Proportional to 100,374.12, 150,429.96 and 75,216.42

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Solution

The fourth proportional to 100,374.12, 150,429.96 and 75,216.42 is: 112,726.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,374.12 : 150,429.96 = 75,216.42 : x
  2. Step 2: Convert to fraction form
    100,374.12/150,429.96 = 75,216.42/x
  3. Step 3: Cross multiply
    100,374.12x = 150,429.96 × 75,216.42
  4. Step 4: Simplify right side
    100,374.12x = 11,314,803,051.94
  5. Step 5: Solve for x
    x = 11,314,803,051.94/100,374.12
  6. Step 6: Final answer
    x = 112,726.30

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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.