Home / 165,510.72-248,091.12-81,153.36

Finding the Fourth Proportional to 165,510.72, 248,091.12 and 81,153.36

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Solution

The fourth proportional to 165,510.72, 248,091.12 and 81,153.36 is: 121,644.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,510.72 : 248,091.12 = 81,153.36 : x
  2. Step 2: Convert to fraction form
    165,510.72/248,091.12 = 81,153.36/x
  3. Step 3: Cross multiply
    165,510.72x = 248,091.12 × 81,153.36
  4. Step 4: Simplify right side
    165,510.72x = 20,133,427,974.16
  5. Step 5: Solve for x
    x = 20,133,427,974.16/165,510.72
  6. Step 6: Final answer
    x = 121,644.25

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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.