Home / 165,810.80-248,543.40-90,815.60

Finding the Fourth Proportional to 165,810.80, 248,543.40 and 90,815.60

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Solution

The fourth proportional to 165,810.80, 248,543.40 and 90,815.60 is: 136,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,810.80 : 248,543.40 = 90,815.60 : x
  2. Step 2: Convert to fraction form
    165,810.80/248,543.40 = 90,815.60/x
  3. Step 3: Cross multiply
    165,810.80x = 248,543.40 × 90,815.60
  4. Step 4: Simplify right side
    165,810.80x = 22,571,617,997.04
  5. Step 5: Solve for x
    x = 22,571,617,997.04/165,810.80
  6. Step 6: Final answer
    x = 136,128.76

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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.