Home / 165,867.40-248,858.70-72,440.20

Finding the Fourth Proportional to 165,867.40, 248,858.70 and 72,440.20

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Solution

The fourth proportional to 165,867.40, 248,858.70 and 72,440.20 is: 108,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,867.40 : 248,858.70 = 72,440.20 : x
  2. Step 2: Convert to fraction form
    165,867.40/248,858.70 = 72,440.20/x
  3. Step 3: Cross multiply
    165,867.40x = 248,858.70 × 72,440.20
  4. Step 4: Simplify right side
    165,867.40x = 18,027,373,999.74
  5. Step 5: Solve for x
    x = 18,027,373,999.74/165,867.40
  6. Step 6: Final answer
    x = 108,685.46

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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.