Home / 144,799.56-199,828.80-81,135

Finding the Fourth Proportional to 144,799.56, 199,828.80 and 81,135

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Solution

The fourth proportional to 144,799.56, 199,828.80 and 81,135 is: 111,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,799.56 : 199,828.80 = 81,135 : x
  2. Step 2: Convert to fraction form
    144,799.56/199,828.80 = 81,135/x
  3. Step 3: Cross multiply
    144,799.56x = 199,828.80 × 81,135
  4. Step 4: Simplify right side
    144,799.56x = 16,213,109,688
  5. Step 5: Solve for x
    x = 16,213,109,688/144,799.56
  6. Step 6: Final answer
    x = 111,969.33

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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.