Home / 158,905.13-219,289.10-87,286.37

Finding the Fourth Proportional to 158,905.13, 219,289.10 and 87,286.37

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Solution

The fourth proportional to 158,905.13, 219,289.10 and 87,286.37 is: 120,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,905.13 : 219,289.10 = 87,286.37 : x
  2. Step 2: Convert to fraction form
    158,905.13/219,289.10 = 87,286.37/x
  3. Step 3: Cross multiply
    158,905.13x = 219,289.10 × 87,286.37
  4. Step 4: Simplify right side
    158,905.13x = 19,140,947,986.69
  5. Step 5: Solve for x
    x = 19,140,947,986.69/158,905.13
  6. Step 6: Final answer
    x = 120,455.20

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1.5x scale

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.