Home / 145,650.12-200,996.64-81,988.08

Finding the Fourth Proportional to 145,650.12, 200,996.64 and 81,988.08

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Solution

The fourth proportional to 145,650.12, 200,996.64 and 81,988.08 is: 113,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,650.12 : 200,996.64 = 81,988.08 : x
  2. Step 2: Convert to fraction form
    145,650.12/200,996.64 = 81,988.08/x
  3. Step 3: Cross multiply
    145,650.12x = 200,996.64 × 81,988.08
  4. Step 4: Simplify right side
    145,650.12x = 16,479,328,600.05
  5. Step 5: Solve for x
    x = 16,479,328,600.05/145,650.12
  6. Step 6: Final answer
    x = 113,143.25

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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.