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Finding the Fourth Proportional to 99,611.63, 137,460.04 and 54,288.64

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Solution

The fourth proportional to 99,611.63, 137,460.04 and 54,288.64 is: 74,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,611.63 : 137,460.04 = 54,288.64 : x
  2. Step 2: Convert to fraction form
    99,611.63/137,460.04 = 54,288.64/x
  3. Step 3: Cross multiply
    99,611.63x = 137,460.04 × 54,288.64
  4. Step 4: Simplify right side
    99,611.63x = 7,462,519,198.90
  5. Step 5: Solve for x
    x = 7,462,519,198.90/99,611.63
  6. Step 6: Final answer
    x = 74,916.14

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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.