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Finding the Fourth Proportional to 158,883.80, 219,260.94 and 87,264.68

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Solution

The fourth proportional to 158,883.80, 219,260.94 and 87,264.68 is: 120,425.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,883.80 : 219,260.94 = 87,264.68 : x
  2. Step 2: Convert to fraction form
    158,883.80/219,260.94 = 87,264.68/x
  3. Step 3: Cross multiply
    158,883.80x = 219,260.94 × 87,264.68
  4. Step 4: Simplify right side
    158,883.80x = 19,133,735,765.60
  5. Step 5: Solve for x
    x = 19,133,735,765.60/158,883.80
  6. Step 6: Final answer
    x = 120,425.97

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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.