Home / 145,518.22-200,815.20-81,856.07

Finding the Fourth Proportional to 145,518.22, 200,815.20 and 81,856.07

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Solution

The fourth proportional to 145,518.22, 200,815.20 and 81,856.07 is: 112,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,518.22 : 200,815.20 = 81,856.07 : x
  2. Step 2: Convert to fraction form
    145,518.22/200,815.20 = 81,856.07/x
  3. Step 3: Cross multiply
    145,518.22x = 200,815.20 × 81,856.07
  4. Step 4: Simplify right side
    145,518.22x = 16,437,942,817.25
  5. Step 5: Solve for x
    x = 16,437,942,817.25/145,518.22
  6. Step 6: Final answer
    x = 112,961.41

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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.