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Finding the Fourth Proportional to 100,153.31, 150,063.10 and 70,508.72

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Solution

The fourth proportional to 100,153.31, 150,063.10 and 70,508.72 is: 105,645.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,153.31 : 150,063.10 = 70,508.72 : x
  2. Step 2: Convert to fraction form
    100,153.31/150,063.10 = 70,508.72/x
  3. Step 3: Cross multiply
    100,153.31x = 150,063.10 × 70,508.72
  4. Step 4: Simplify right side
    100,153.31x = 10,580,757,299.12
  5. Step 5: Solve for x
    x = 10,580,757,299.12/100,153.31
  6. Step 6: Final answer
    x = 105,645.61

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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.