Home / 99,533.10-137,358.28-54,212.80

Finding the Fourth Proportional to 99,533.10, 137,358.28 and 54,212.80

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Solution

The fourth proportional to 99,533.10, 137,358.28 and 54,212.80 is: 74,815.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,533.10 : 137,358.28 = 54,212.80 : x
  2. Step 2: Convert to fraction form
    99,533.10/137,358.28 = 54,212.80/x
  3. Step 3: Cross multiply
    99,533.10x = 137,358.28 × 54,212.80
  4. Step 4: Simplify right side
    99,533.10x = 7,446,576,961.98
  5. Step 5: Solve for x
    x = 7,446,576,961.98/99,533.10
  6. Step 6: Final answer
    x = 74,815.08

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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.