Home / 165,510.40-248,325.72-81,261.60

Finding the Fourth Proportional to 165,510.40, 248,325.72 and 81,261.60

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Solution

The fourth proportional to 165,510.40, 248,325.72 and 81,261.60 is: 121,921.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,510.40 : 248,325.72 = 81,261.60 : x
  2. Step 2: Convert to fraction form
    165,510.40/248,325.72 = 81,261.60/x
  3. Step 3: Cross multiply
    165,510.40x = 248,325.72 × 81,261.60
  4. Step 4: Simplify right side
    165,510.40x = 20,179,345,328.35
  5. Step 5: Solve for x
    x = 20,179,345,328.35/165,510.40
  6. Step 6: Final answer
    x = 121,921.92

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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.