Home / 158,387.10-218,573.55-86,771.58

Finding the Fourth Proportional to 158,387.10, 218,573.55 and 86,771.58

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Solution

The fourth proportional to 158,387.10, 218,573.55 and 86,771.58 is: 119,744.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,387.10 : 218,573.55 = 86,771.58 : x
  2. Step 2: Convert to fraction form
    158,387.10/218,573.55 = 86,771.58/x
  3. Step 3: Cross multiply
    158,387.10x = 218,573.55 × 86,771.58
  4. Step 4: Simplify right side
    158,387.10x = 18,965,972,279.71
  5. Step 5: Solve for x
    x = 18,965,972,279.71/158,387.10
  6. Step 6: Final answer
    x = 119,744.43

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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.