Home / 99,486.08-137,293.20-61,231.36

Finding the Fourth Proportional to 99,486.08, 137,293.20 and 61,231.36

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Solution

The fourth proportional to 99,486.08, 137,293.20 and 61,231.36 is: 84,500.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,486.08 : 137,293.20 = 61,231.36 : x
  2. Step 2: Convert to fraction form
    99,486.08/137,293.20 = 61,231.36/x
  3. Step 3: Cross multiply
    99,486.08x = 137,293.20 × 61,231.36
  4. Step 4: Simplify right side
    99,486.08x = 8,406,649,354.75
  5. Step 5: Solve for x
    x = 8,406,649,354.75/99,486.08
  6. Step 6: Final answer
    x = 84,500.76

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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.