Home / 205,140.20-307,710.36-55,380.34

Finding the Fourth Proportional to 205,140.20, 307,710.36 and 55,380.34

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Solution

The fourth proportional to 205,140.20, 307,710.36 and 55,380.34 is: 83,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,140.20 : 307,710.36 = 55,380.34 : x
  2. Step 2: Convert to fraction form
    205,140.20/307,710.36 = 55,380.34/x
  3. Step 3: Cross multiply
    205,140.20x = 307,710.36 × 55,380.34
  4. Step 4: Simplify right side
    205,140.20x = 17,041,104,742.96
  5. Step 5: Solve for x
    x = 17,041,104,742.96/205,140.20
  6. Step 6: Final answer
    x = 83,070.53

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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.