Home / 120,857.33-180,495.64-102,896.51

Finding the Fourth Proportional to 120,857.33, 180,495.64 and 102,896.51

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Solution

The fourth proportional to 120,857.33, 180,495.64 and 102,896.51 is: 153,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,857.33 : 180,495.64 = 102,896.51 : x
  2. Step 2: Convert to fraction form
    120,857.33/180,495.64 = 102,896.51/x
  3. Step 3: Cross multiply
    120,857.33x = 180,495.64 × 102,896.51
  4. Step 4: Simplify right side
    120,857.33x = 18,572,371,426.22
  5. Step 5: Solve for x
    x = 18,572,371,426.22/120,857.33
  6. Step 6: Final answer
    x = 153,671.87

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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.