Home / 145,651.12-200,998.02-81,989.08

Finding the Fourth Proportional to 145,651.12, 200,998.02 and 81,989.08

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Solution

The fourth proportional to 145,651.12, 200,998.02 and 81,989.08 is: 113,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,651.12 : 200,998.02 = 81,989.08 : x
  2. Step 2: Convert to fraction form
    145,651.12/200,998.02 = 81,989.08/x
  3. Step 3: Cross multiply
    145,651.12x = 200,998.02 × 81,989.08
  4. Step 4: Simplify right side
    145,651.12x = 16,479,642,741.62
  5. Step 5: Solve for x
    x = 16,479,642,741.62/145,651.12
  6. Step 6: Final answer
    x = 113,144.63

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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.