Home / 107,721.59-161,527.70-80,821.49

Finding the Fourth Proportional to 107,721.59, 161,527.70 and 80,821.49

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Solution

The fourth proportional to 107,721.59, 161,527.70 and 80,821.49 is: 121,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,721.59 : 161,527.70 = 80,821.49 : x
  2. Step 2: Convert to fraction form
    107,721.59/161,527.70 = 80,821.49/x
  3. Step 3: Cross multiply
    107,721.59x = 161,527.70 × 80,821.49
  4. Step 4: Simplify right side
    107,721.59x = 13,054,908,178.53
  5. Step 5: Solve for x
    x = 13,054,908,178.53/107,721.59
  6. Step 6: Final answer
    x = 121,191.20

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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.