Home / 131,485.96-181,452.18-71,869.96

Finding the Fourth Proportional to 131,485.96, 181,452.18 and 71,869.96

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Solution

The fourth proportional to 131,485.96, 181,452.18 and 71,869.96 is: 99,181.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,485.96 : 181,452.18 = 71,869.96 : x
  2. Step 2: Convert to fraction form
    131,485.96/181,452.18 = 71,869.96/x
  3. Step 3: Cross multiply
    131,485.96x = 181,452.18 × 71,869.96
  4. Step 4: Simplify right side
    131,485.96x = 13,040,960,918.51
  5. Step 5: Solve for x
    x = 13,040,960,918.51/131,485.96
  6. Step 6: Final answer
    x = 99,181.39

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1.5x scale

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.