Home / 74,754.15-103,176.33-72,384.09

Finding the Fourth Proportional to 74,754.15, 103,176.33 and 72,384.09

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Solution

The fourth proportional to 74,754.15, 103,176.33 and 72,384.09 is: 99,905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,754.15 : 103,176.33 = 72,384.09 : x
  2. Step 2: Convert to fraction form
    74,754.15/103,176.33 = 72,384.09/x
  3. Step 3: Cross multiply
    74,754.15x = 103,176.33 × 72,384.09
  4. Step 4: Simplify right side
    74,754.15x = 7,468,324,756.59
  5. Step 5: Solve for x
    x = 7,468,324,756.59/74,754.15
  6. Step 6: Final answer
    x = 99,905.15

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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.