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Finding the Fourth Proportional to 100,453.80, 150,680.70 and 38,124.30

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Solution

The fourth proportional to 100,453.80, 150,680.70 and 38,124.30 is: 57,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.80 : 150,680.70 = 38,124.30 : x
  2. Step 2: Convert to fraction form
    100,453.80/150,680.70 = 38,124.30/x
  3. Step 3: Cross multiply
    100,453.80x = 150,680.70 × 38,124.30
  4. Step 4: Simplify right side
    100,453.80x = 5,744,596,211.01
  5. Step 5: Solve for x
    x = 5,744,596,211.01/100,453.80
  6. Step 6: Final answer
    x = 57,186.45

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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.