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Finding the Fourth Proportional to 99,299.21, 137,034.23 and 53,977.88

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Solution

The fourth proportional to 99,299.21, 137,034.23 and 53,977.88 is: 74,490.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,299.21 : 137,034.23 = 53,977.88 : x
  2. Step 2: Convert to fraction form
    99,299.21/137,034.23 = 53,977.88/x
  3. Step 3: Cross multiply
    99,299.21x = 137,034.23 × 53,977.88
  4. Step 4: Simplify right side
    99,299.21x = 7,396,817,295.53
  5. Step 5: Solve for x
    x = 7,396,817,295.53/99,299.21
  6. Step 6: Final answer
    x = 74,490.20

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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.