Home / 99,904.48-137,899.20-61,676.08

Finding the Fourth Proportional to 99,904.48, 137,899.20 and 61,676.08

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Solution

The fourth proportional to 99,904.48, 137,899.20 and 61,676.08 is: 85,132.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,904.48 : 137,899.20 = 61,676.08 : x
  2. Step 2: Convert to fraction form
    99,904.48/137,899.20 = 61,676.08/x
  3. Step 3: Cross multiply
    99,904.48x = 137,899.20 × 61,676.08
  4. Step 4: Simplify right side
    99,904.48x = 8,505,082,091.14
  5. Step 5: Solve for x
    x = 8,505,082,091.14/99,904.48
  6. Step 6: Final answer
    x = 85,132.14

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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.