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Finding the Fourth Proportional to 159,953.28, 220,729.50 and 87,353.76

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Solution

The fourth proportional to 159,953.28, 220,729.50 and 87,353.76 is: 120,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,953.28 : 220,729.50 = 87,353.76 : x
  2. Step 2: Convert to fraction form
    159,953.28/220,729.50 = 87,353.76/x
  3. Step 3: Cross multiply
    159,953.28x = 220,729.50 × 87,353.76
  4. Step 4: Simplify right side
    159,953.28x = 19,281,551,767.92
  5. Step 5: Solve for x
    x = 19,281,551,767.92/159,953.28
  6. Step 6: Final answer
    x = 120,544.90

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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.