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Finding the Fourth Proportional to 101,571.74, 152,415.95 and 79,322.66

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Solution

The fourth proportional to 101,571.74, 152,415.95 and 79,322.66 is: 119,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,571.74 : 152,415.95 = 79,322.66 : x
  2. Step 2: Convert to fraction form
    101,571.74/152,415.95 = 79,322.66/x
  3. Step 3: Cross multiply
    101,571.74x = 152,415.95 × 79,322.66
  4. Step 4: Simplify right side
    101,571.74x = 12,090,037,421.73
  5. Step 5: Solve for x
    x = 12,090,037,421.73/101,571.74
  6. Step 6: Final answer
    x = 119,029.55

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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.