Home / 100,451.94-138,589.26-57,400.50

Finding the Fourth Proportional to 100,451.94, 138,589.26 and 57,400.50

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Solution

The fourth proportional to 100,451.94, 138,589.26 and 57,400.50 is: 79,193.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,451.94 : 138,589.26 = 57,400.50 : x
  2. Step 2: Convert to fraction form
    100,451.94/138,589.26 = 57,400.50/x
  3. Step 3: Cross multiply
    100,451.94x = 138,589.26 × 57,400.50
  4. Step 4: Simplify right side
    100,451.94x = 7,955,092,818.63
  5. Step 5: Solve for x
    x = 7,955,092,818.63/100,451.94
  6. Step 6: Final answer
    x = 79,193.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.