Home / 158,386.87-218,579.33-86,766.88

Finding the Fourth Proportional to 158,386.87, 218,579.33 and 86,766.88

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Solution

The fourth proportional to 158,386.87, 218,579.33 and 86,766.88 is: 119,741.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,386.87 : 218,579.33 = 86,766.88 : x
  2. Step 2: Convert to fraction form
    158,386.87/218,579.33 = 86,766.88/x
  3. Step 3: Cross multiply
    158,386.87x = 218,579.33 × 86,766.88
  4. Step 4: Simplify right side
    158,386.87x = 18,965,446,496.59
  5. Step 5: Solve for x
    x = 18,965,446,496.59/158,386.87
  6. Step 6: Final answer
    x = 119,741.28

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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.