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Finding the Fourth Proportional to 100,034.56, 149,885.24 and 70,390.11

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Solution

The fourth proportional to 100,034.56, 149,885.24 and 70,390.11 is: 105,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,034.56 : 149,885.24 = 70,390.11 : x
  2. Step 2: Convert to fraction form
    100,034.56/149,885.24 = 70,390.11/x
  3. Step 3: Cross multiply
    100,034.56x = 149,885.24 × 70,390.11
  4. Step 4: Simplify right side
    100,034.56x = 10,550,438,530.98
  5. Step 5: Solve for x
    x = 10,550,438,530.98/100,034.56
  6. Step 6: Final answer
    x = 105,467.94

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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.