Home / 158,016.12-218,060.74-86,395.38

Finding the Fourth Proportional to 158,016.12, 218,060.74 and 86,395.38

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Solution

The fourth proportional to 158,016.12, 218,060.74 and 86,395.38 is: 119,224.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,016.12 : 218,060.74 = 86,395.38 : x
  2. Step 2: Convert to fraction form
    158,016.12/218,060.74 = 86,395.38/x
  3. Step 3: Cross multiply
    158,016.12x = 218,060.74 × 86,395.38
  4. Step 4: Simplify right side
    158,016.12x = 18,839,440,495.38
  5. Step 5: Solve for x
    x = 18,839,440,495.38/158,016.12
  6. Step 6: Final answer
    x = 119,224.80

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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.