Home / 205,808.81-308,749.94-72,766.31

Finding the Fourth Proportional to 205,808.81, 308,749.94 and 72,766.31

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Solution

The fourth proportional to 205,808.81, 308,749.94 and 72,766.31 is: 109,162.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,808.81 : 308,749.94 = 72,766.31 : x
  2. Step 2: Convert to fraction form
    205,808.81/308,749.94 = 72,766.31/x
  3. Step 3: Cross multiply
    205,808.81x = 308,749.94 × 72,766.31
  4. Step 4: Simplify right side
    205,808.81x = 22,466,593,482.69
  5. Step 5: Solve for x
    x = 22,466,593,482.69/205,808.81
  6. Step 6: Final answer
    x = 109,162.45

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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.