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Finding the Fourth Proportional to 101,428.68, 152,217.70 and 48,120.76

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Solution

The fourth proportional to 101,428.68, 152,217.70 and 48,120.76 is: 72,216.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,428.68 : 152,217.70 = 48,120.76 : x
  2. Step 2: Convert to fraction form
    101,428.68/152,217.70 = 48,120.76/x
  3. Step 3: Cross multiply
    101,428.68x = 152,217.70 × 48,120.76
  4. Step 4: Simplify right side
    101,428.68x = 7,324,831,409.45
  5. Step 5: Solve for x
    x = 7,324,831,409.45/101,428.68
  6. Step 6: Final answer
    x = 72,216.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.