Home / 101,328.21-151,250.31-89,357.69

Finding the Fourth Proportional to 101,328.21, 151,250.31 and 89,357.69

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Solution

The fourth proportional to 101,328.21, 151,250.31 and 89,357.69 is: 133,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,328.21 : 151,250.31 = 89,357.69 : x
  2. Step 2: Convert to fraction form
    101,328.21/151,250.31 = 89,357.69/x
  3. Step 3: Cross multiply
    101,328.21x = 151,250.31 × 89,357.69
  4. Step 4: Simplify right side
    101,328.21x = 13,515,378,691.51
  5. Step 5: Solve for x
    x = 13,515,378,691.51/101,328.21
  6. Step 6: Final answer
    x = 133,382.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.