Home / 167,756.81-231,428.12-99,735.20

Finding the Fourth Proportional to 167,756.81, 231,428.12 and 99,735.20

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Solution

The fourth proportional to 167,756.81, 231,428.12 and 99,735.20 is: 137,589.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,756.81 : 231,428.12 = 99,735.20 : x
  2. Step 2: Convert to fraction form
    167,756.81/231,428.12 = 99,735.20/x
  3. Step 3: Cross multiply
    167,756.81x = 231,428.12 × 99,735.20
  4. Step 4: Simplify right side
    167,756.81x = 23,081,528,178.01
  5. Step 5: Solve for x
    x = 23,081,528,178.01/167,756.81
  6. Step 6: Final answer
    x = 137,589.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.