Home / 158,426.90-218,634.22-86,811.50

Finding the Fourth Proportional to 158,426.90, 218,634.22 and 86,811.50

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Solution

The fourth proportional to 158,426.90, 218,634.22 and 86,811.50 is: 119,802.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,426.90 : 218,634.22 = 86,811.50 : x
  2. Step 2: Convert to fraction form
    158,426.90/218,634.22 = 86,811.50/x
  3. Step 3: Cross multiply
    158,426.90x = 218,634.22 × 86,811.50
  4. Step 4: Simplify right side
    158,426.90x = 18,979,964,589.53
  5. Step 5: Solve for x
    x = 18,979,964,589.53/158,426.90
  6. Step 6: Final answer
    x = 119,802.66

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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.