Home / 99,985.29-137,983.03-54,662.28

Finding the Fourth Proportional to 99,985.29, 137,983.03 and 54,662.28

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Solution

The fourth proportional to 99,985.29, 137,983.03 and 54,662.28 is: 75,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,985.29 : 137,983.03 = 54,662.28 : x
  2. Step 2: Convert to fraction form
    99,985.29/137,983.03 = 54,662.28/x
  3. Step 3: Cross multiply
    99,985.29x = 137,983.03 × 54,662.28
  4. Step 4: Simplify right side
    99,985.29x = 7,542,466,367.02
  5. Step 5: Solve for x
    x = 7,542,466,367.02/99,985.29
  6. Step 6: Final answer
    x = 75,435.76

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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.