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Finding the Fourth Proportional to 99,458.28, 137,269.08 and 63,646.56

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Solution

The fourth proportional to 99,458.28, 137,269.08 and 63,646.56 is: 87,842.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,458.28 : 137,269.08 = 63,646.56 : x
  2. Step 2: Convert to fraction form
    99,458.28/137,269.08 = 63,646.56/x
  3. Step 3: Cross multiply
    99,458.28x = 137,269.08 × 63,646.56
  4. Step 4: Simplify right side
    99,458.28x = 8,736,704,736.36
  5. Step 5: Solve for x
    x = 8,736,704,736.36/99,458.28
  6. Step 6: Final answer
    x = 87,842.91

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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.