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Finding the Fourth Proportional to 99,760.28, 137,669.12 and 63,950.28

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Solution

The fourth proportional to 99,760.28, 137,669.12 and 63,950.28 is: 88,251.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,760.28 : 137,669.12 = 63,950.28 : x
  2. Step 2: Convert to fraction form
    99,760.28/137,669.12 = 63,950.28/x
  3. Step 3: Cross multiply
    99,760.28x = 137,669.12 × 63,950.28
  4. Step 4: Simplify right side
    99,760.28x = 8,803,978,771.35
  5. Step 5: Solve for x
    x = 8,803,978,771.35/99,760.28
  6. Step 6: Final answer
    x = 88,251.34

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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.