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Finding the Fourth Proportional to 159,954.28, 220,730.88 and 87,354.76

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Solution

The fourth proportional to 159,954.28, 220,730.88 and 87,354.76 is: 120,546.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,954.28 : 220,730.88 = 87,354.76 : x
  2. Step 2: Convert to fraction form
    159,954.28/220,730.88 = 87,354.76/x
  3. Step 3: Cross multiply
    159,954.28x = 220,730.88 × 87,354.76
  4. Step 4: Simplify right side
    159,954.28x = 19,281,893,046.99
  5. Step 5: Solve for x
    x = 19,281,893,046.99/159,954.28
  6. Step 6: Final answer
    x = 120,546.28

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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.