Home / 123,625.05-170,624.41-72,637.76

Finding the Fourth Proportional to 123,625.05, 170,624.41 and 72,637.76

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Solution

The fourth proportional to 123,625.05, 170,624.41 and 72,637.76 is: 100,252.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,625.05 : 170,624.41 = 72,637.76 : x
  2. Step 2: Convert to fraction form
    123,625.05/170,624.41 = 72,637.76/x
  3. Step 3: Cross multiply
    123,625.05x = 170,624.41 × 72,637.76
  4. Step 4: Simplify right side
    123,625.05x = 12,393,775,188.69
  5. Step 5: Solve for x
    x = 12,393,775,188.69/123,625.05
  6. Step 6: Final answer
    x = 100,252.94

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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.