Home / 158,724.79-219,046.52-87,107.39

Finding the Fourth Proportional to 158,724.79, 219,046.52 and 87,107.39

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Solution

The fourth proportional to 158,724.79, 219,046.52 and 87,107.39 is: 120,211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,724.79 : 219,046.52 = 87,107.39 : x
  2. Step 2: Convert to fraction form
    158,724.79/219,046.52 = 87,107.39/x
  3. Step 3: Cross multiply
    158,724.79x = 219,046.52 × 87,107.39
  4. Step 4: Simplify right side
    158,724.79x = 19,080,570,210.25
  5. Step 5: Solve for x
    x = 19,080,570,210.25/158,724.79
  6. Step 6: Final answer
    x = 120,211.66

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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.