Home / 131,615.87-181,629.36-71,186.58

Finding the Fourth Proportional to 131,615.87, 181,629.36 and 71,186.58

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Solution

The fourth proportional to 131,615.87, 181,629.36 and 71,186.58 is: 98,237.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,615.87 : 181,629.36 = 71,186.58 : x
  2. Step 2: Convert to fraction form
    131,615.87/181,629.36 = 71,186.58/x
  3. Step 3: Cross multiply
    131,615.87x = 181,629.36 × 71,186.58
  4. Step 4: Simplify right side
    131,615.87x = 12,929,572,965.99
  5. Step 5: Solve for x
    x = 12,929,572,965.99/131,615.87
  6. Step 6: Final answer
    x = 98,237.19

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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.