Home / 158,905.85-219,235.76-90,898.05

Finding the Fourth Proportional to 158,905.85, 219,235.76 and 90,898.05

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Solution

The fourth proportional to 158,905.85, 219,235.76 and 90,898.05 is: 125,408.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,905.85 : 219,235.76 = 90,898.05 : x
  2. Step 2: Convert to fraction form
    158,905.85/219,235.76 = 90,898.05/x
  3. Step 3: Cross multiply
    158,905.85x = 219,235.76 × 90,898.05
  4. Step 4: Simplify right side
    158,905.85x = 19,928,101,523.60
  5. Step 5: Solve for x
    x = 19,928,101,523.60/158,905.85
  6. Step 6: Final answer
    x = 125,408.23

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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.