Home / 158,419.89-218,619.41-86,802.63

Finding the Fourth Proportional to 158,419.89, 218,619.41 and 86,802.63

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Solution

The fourth proportional to 158,419.89, 218,619.41 and 86,802.63 is: 119,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,419.89 : 218,619.41 = 86,802.63 : x
  2. Step 2: Convert to fraction form
    158,419.89/218,619.41 = 86,802.63/x
  3. Step 3: Cross multiply
    158,419.89x = 218,619.41 × 86,802.63
  4. Step 4: Simplify right side
    158,419.89x = 18,976,739,323.04
  5. Step 5: Solve for x
    x = 18,976,739,323.04/158,419.89
  6. Step 6: Final answer
    x = 119,787.61

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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.