Home / 158,511.90-218,744.64-86,891.70

Finding the Fourth Proportional to 158,511.90, 218,744.64 and 86,891.70

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Solution

The fourth proportional to 158,511.90, 218,744.64 and 86,891.70 is: 119,909.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,511.90 : 218,744.64 = 86,891.70 : x
  2. Step 2: Convert to fraction form
    158,511.90/218,744.64 = 86,891.70/x
  3. Step 3: Cross multiply
    158,511.90x = 218,744.64 × 86,891.70
  4. Step 4: Simplify right side
    158,511.90x = 19,007,093,635.49
  5. Step 5: Solve for x
    x = 19,007,093,635.49/158,511.90
  6. Step 6: Final answer
    x = 119,909.57

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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.