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Finding the Fourth Proportional to 100,018.76, 150,101.98 and 47,428.42

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Solution

The fourth proportional to 100,018.76, 150,101.98 and 47,428.42 is: 71,177.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,018.76 : 150,101.98 = 47,428.42 : x
  2. Step 2: Convert to fraction form
    100,018.76/150,101.98 = 47,428.42/x
  3. Step 3: Cross multiply
    100,018.76x = 150,101.98 × 47,428.42
  4. Step 4: Simplify right side
    100,018.76x = 7,119,099,750.27
  5. Step 5: Solve for x
    x = 7,119,099,750.27/100,018.76
  6. Step 6: Final answer
    x = 71,177.64

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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.