Home / 158,315.73-218,478.24-86,694.50

Finding the Fourth Proportional to 158,315.73, 218,478.24 and 86,694.50

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Solution

The fourth proportional to 158,315.73, 218,478.24 and 86,694.50 is: 119,639.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,315.73 : 218,478.24 = 86,694.50 : x
  2. Step 2: Convert to fraction form
    158,315.73/218,478.24 = 86,694.50/x
  3. Step 3: Cross multiply
    158,315.73x = 218,478.24 × 86,694.50
  4. Step 4: Simplify right side
    158,315.73x = 18,940,860,685.29
  5. Step 5: Solve for x
    x = 18,940,860,685.29/158,315.73
  6. Step 6: Final answer
    x = 119,639.79

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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.