Home / 145,655.12-200,999.40-81,984.26

Finding the Fourth Proportional to 145,655.12, 200,999.40 and 81,984.26

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Solution

The fourth proportional to 145,655.12, 200,999.40 and 81,984.26 is: 113,135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,655.12 : 200,999.40 = 81,984.26 : x
  2. Step 2: Convert to fraction form
    145,655.12/200,999.40 = 81,984.26/x
  3. Step 3: Cross multiply
    145,655.12x = 200,999.40 × 81,984.26
  4. Step 4: Simplify right side
    145,655.12x = 16,478,787,069.44
  5. Step 5: Solve for x
    x = 16,478,787,069.44/145,655.12
  6. Step 6: Final answer
    x = 113,135.65

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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.