Home / 91,699.20-137,859.84-73,215.36

Finding the Fourth Proportional to 91,699.20, 137,859.84 and 73,215.36

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Solution

The fourth proportional to 91,699.20, 137,859.84 and 73,215.36 is: 110,071.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,699.20 : 137,859.84 = 73,215.36 : x
  2. Step 2: Convert to fraction form
    91,699.20/137,859.84 = 73,215.36/x
  3. Step 3: Cross multiply
    91,699.20x = 137,859.84 × 73,215.36
  4. Step 4: Simplify right side
    91,699.20x = 10,093,457,815.14
  5. Step 5: Solve for x
    x = 10,093,457,815.14/91,699.20
  6. Step 6: Final answer
    x = 110,071.38

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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.