Home / 205,135.84-307,841.20-72,016.49

Finding the Fourth Proportional to 205,135.84, 307,841.20 and 72,016.49

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Solution

The fourth proportional to 205,135.84, 307,841.20 and 72,016.49 is: 108,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,135.84 : 307,841.20 = 72,016.49 : x
  2. Step 2: Convert to fraction form
    205,135.84/307,841.20 = 72,016.49/x
  3. Step 3: Cross multiply
    205,135.84x = 307,841.20 × 72,016.49
  4. Step 4: Simplify right side
    205,135.84x = 22,169,641,931.79
  5. Step 5: Solve for x
    x = 22,169,641,931.79/205,135.84
  6. Step 6: Final answer
    x = 108,072.98

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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.