Home / 100,244.93-138,285.47-61,992.28

Finding the Fourth Proportional to 100,244.93, 138,285.47 and 61,992.28

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Solution

The fourth proportional to 100,244.93, 138,285.47 and 61,992.28 is: 85,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,244.93 : 138,285.47 = 61,992.28 : x
  2. Step 2: Convert to fraction form
    100,244.93/138,285.47 = 61,992.28/x
  3. Step 3: Cross multiply
    100,244.93x = 138,285.47 × 61,992.28
  4. Step 4: Simplify right side
    100,244.93x = 8,572,631,576.17
  5. Step 5: Solve for x
    x = 8,572,631,576.17/100,244.93
  6. Step 6: Final answer
    x = 85,516.86

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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.