Home / 145,027.86-200,137.60-81,365.50

Finding the Fourth Proportional to 145,027.86, 200,137.60 and 81,365.50

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Solution

The fourth proportional to 145,027.86, 200,137.60 and 81,365.50 is: 112,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,027.86 : 200,137.60 = 81,365.50 : x
  2. Step 2: Convert to fraction form
    145,027.86/200,137.60 = 81,365.50/x
  3. Step 3: Cross multiply
    145,027.86x = 200,137.60 × 81,365.50
  4. Step 4: Simplify right side
    145,027.86x = 16,284,295,892.80
  5. Step 5: Solve for x
    x = 16,284,295,892.80/145,027.86
  6. Step 6: Final answer
    x = 112,283.91

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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.