Home / 149,109.52-205,773.60-81,127.84

Finding the Fourth Proportional to 149,109.52, 205,773.60 and 81,127.84

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Solution

The fourth proportional to 149,109.52, 205,773.60 and 81,127.84 is: 111,957.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,109.52 : 205,773.60 = 81,127.84 : x
  2. Step 2: Convert to fraction form
    149,109.52/205,773.60 = 81,127.84/x
  3. Step 3: Cross multiply
    149,109.52x = 205,773.60 × 81,127.84
  4. Step 4: Simplify right side
    149,109.52x = 16,693,967,697.02
  5. Step 5: Solve for x
    x = 16,693,967,697.02/149,109.52
  6. Step 6: Final answer
    x = 111,957.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.