Home / 109,811.60-164,587.80-82,077.20

Finding the Fourth Proportional to 109,811.60, 164,587.80 and 82,077.20

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Solution

The fourth proportional to 109,811.60, 164,587.80 and 82,077.20 is: 123,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,811.60 : 164,587.80 = 82,077.20 : x
  2. Step 2: Convert to fraction form
    109,811.60/164,587.80 = 82,077.20/x
  3. Step 3: Cross multiply
    109,811.60x = 164,587.80 × 82,077.20
  4. Step 4: Simplify right side
    109,811.60x = 13,508,905,778.16
  5. Step 5: Solve for x
    x = 13,508,905,778.16/109,811.60
  6. Step 6: Final answer
    x = 123,018.93

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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.