Home / 158,398.38-218,589.93-86,782.98

Finding the Fourth Proportional to 158,398.38, 218,589.93 and 86,782.98

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Solution

The fourth proportional to 158,398.38, 218,589.93 and 86,782.98 is: 119,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,398.38 : 218,589.93 = 86,782.98 : x
  2. Step 2: Convert to fraction form
    158,398.38/218,589.93 = 86,782.98/x
  3. Step 3: Cross multiply
    158,398.38x = 218,589.93 × 86,782.98
  4. Step 4: Simplify right side
    158,398.38x = 18,969,885,523.39
  5. Step 5: Solve for x
    x = 18,969,885,523.39/158,398.38
  6. Step 6: Final answer
    x = 119,760.60

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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.