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Finding the Fourth Proportional to 101,900.76, 152,628.12 and 72,228.60

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Solution

The fourth proportional to 101,900.76, 152,628.12 and 72,228.60 is: 108,184.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,900.76 : 152,628.12 = 72,228.60 : x
  2. Step 2: Convert to fraction form
    101,900.76/152,628.12 = 72,228.60/x
  3. Step 3: Cross multiply
    101,900.76x = 152,628.12 × 72,228.60
  4. Step 4: Simplify right side
    101,900.76x = 11,024,115,428.23
  5. Step 5: Solve for x
    x = 11,024,115,428.23/101,900.76
  6. Step 6: Final answer
    x = 108,184.82

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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.