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Finding the Fourth Proportional to 150,681.12, 207,968.64 and 99,694.88

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Solution

The fourth proportional to 150,681.12, 207,968.64 and 99,694.88 is: 137,597.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,681.12 : 207,968.64 = 99,694.88 : x
  2. Step 2: Convert to fraction form
    150,681.12/207,968.64 = 99,694.88/x
  3. Step 3: Cross multiply
    150,681.12x = 207,968.64 × 99,694.88
  4. Step 4: Simplify right side
    150,681.12x = 20,733,408,608.56
  5. Step 5: Solve for x
    x = 20,733,408,608.56/150,681.12
  6. Step 6: Final answer
    x = 137,597.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.