Home / 123,717.74-170,870.38-83,361.51

Finding the Fourth Proportional to 123,717.74, 170,870.38 and 83,361.51

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Solution

The fourth proportional to 123,717.74, 170,870.38 and 83,361.51 is: 115,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,717.74 : 170,870.38 = 83,361.51 : x
  2. Step 2: Convert to fraction form
    123,717.74/170,870.38 = 83,361.51/x
  3. Step 3: Cross multiply
    123,717.74x = 170,870.38 × 83,361.51
  4. Step 4: Simplify right side
    123,717.74x = 14,244,012,682.67
  5. Step 5: Solve for x
    x = 14,244,012,682.67/123,717.74
  6. Step 6: Final answer
    x = 115,133.15

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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.