Home / 205,219.80-307,829.70-126,077.40

Finding the Fourth Proportional to 205,219.80, 307,829.70 and 126,077.40

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Solution

The fourth proportional to 205,219.80, 307,829.70 and 126,077.40 is: 189,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,219.80 : 307,829.70 = 126,077.40 : x
  2. Step 2: Convert to fraction form
    205,219.80/307,829.70 = 126,077.40/x
  3. Step 3: Cross multiply
    205,219.80x = 307,829.70 × 126,077.40
  4. Step 4: Simplify right side
    205,219.80x = 38,810,368,218.78
  5. Step 5: Solve for x
    x = 38,810,368,218.78/205,219.80
  6. Step 6: Final answer
    x = 189,116.10

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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.